{"id":"CVE-2026-23530","state":"PUBLISHED","title":"FreeRDP has heap-buffer-overflow in planar_decompress_plane_rle","description":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0,`freerdp_bitmap_decompress_planar` does not validate `nSrcWidth`/`nSrcHeight` against `planar->maxWidth`/`maxHeight` before RLE decode. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.","publishedAt":"2026-01-19T16:58:46.712Z","updatedAt":"2026-07-15T01:18:34.586Z","severity":{"score":7.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P","source":"GitHub_M"},"assigner":"GitHub_M","products":["FreeRDP FreeRDP"],"affected":[{"vendor":"FreeRDP","product":"FreeRDP","versions":[{"version":"< 3.21.0","status":"affected"}]}],"references":["https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p","https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1689-L1696","https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1713-L1716","https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L951-L953","https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0","https://access.redhat.com/security/cve/CVE-2026-23530","https://bugzilla.redhat.com/show_bug.cgi?id=2430877","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23530.json","https://access.redhat.com/errata/RHSA-2026:2714","https://access.redhat.com/errata/RHSA-2026:2952","https://access.redhat.com/errata/RHSA-2026:2222","https://access.redhat.com/errata/RHSA-2026:2081","https://access.redhat.com/errata/RHSA-2026:3039","https://access.redhat.com/errata/RHSA-2026:3038","https://access.redhat.com/errata/RHSA-2026:3036","https://access.redhat.com/errata/RHSA-2026:3041","https://access.redhat.com/errata/RHSA-2026:2770","https://access.redhat.com/errata/RHSA-2026:2824","https://access.redhat.com/errata/RHSA-2026:2736","https://access.redhat.com/errata/RHSA-2026:3037","https://access.redhat.com/errata/RHSA-2026:2048"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23530.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23530","state":"PUBLISHED","datePublished":"2026-01-19T16:58:46.712Z","dateUpdated":"2026-07-15T01:18:34.586Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-01-13T18:22:43.981Z"},"containers":{"cna":{"title":"FreeRDP has heap-buffer-overflow in planar_decompress_plane_rle","descriptions":[{"lang":"en","value":"FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0,`freerdp_bitmap_decompress_planar` does not validate `nSrcWidth`/`nSrcHeight` against `planar->maxWidth`/`maxHeight` before RLE decode. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue."}],"affected":[{"vendor":"FreeRDP","product":"FreeRDP","versions":[{"version":"< 3.21.0","status":"affected"}]}],"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p","name":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r4hv-852m-fq7p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1689-L1696","name":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1689-L1696","tags":["x_refsource_MISC"]},{"url":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1713-L1716","name":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L1713-L1716","tags":["x_refsource_MISC"]},{"url":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L951-L953","name":"https://github.com/FreeRDP/FreeRDP/blob/38514dfa5813aa945a86cfbcec279033f8394468/libfreerdp/codec/planar.c#L951-L953","tags":["x_refsource_MISC"]},{"url":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0","name":"https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-01-19T17:18:45.760Z"},"source":{"advisory":"GHSA-r4hv-852m-fq7p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T21:36:24.283241Z","id":"CVE-2026-23530","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-20T21:36:30.982Z"}},{"title":"freerdp: FreeRDP: Heap buffer overflow leading to denial of service and potential code execution from a malicious server.","descriptions":[{"lang":"en","value":"A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. This vulnerability occurs because the `freerdp_bitmap_decompress_planar` function does not properly validate bitmap dimensions when decompressing planar bitmap data. A malicious server can exploit this by sending specially crafted bitmap data, leading to a client-side heap buffer overflow. This can cause a crash (Denial of Service) and potentially allow for arbitrary code execution on the client system."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:3.10.3-5.el10_1.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.1"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:3.10.3-3.el10_0.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7 Extended Lifecycle Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"0:2.1.1-5.el7_9.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.11.7-2.el8_10","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.2 Advanced Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.0.0-46.rc4.el8_2.6","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_aus:8.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-7.el8_4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_aus:8.4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-7.el8_4","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus_long_life:8.4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-7.el8_6.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_aus:8.6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Telecommunications Update Service","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-7.el8_6.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_tus:8.6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-7.el8_6.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_e4s:8.6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Telecommunications Update Service","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-12.el8_8.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_tus:8.8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.2.0-12.el8_8.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_e4s:8.8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.11.7-1.el9_7.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.4.1-3.el9_0","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_e4s:9.0"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.4.1-6.el9_2.2","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_e4s:9.2"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.4 Extended Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.11.2-1.el9_4.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus:9.4"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9.6 Extended Update Support","packageName":"freerdp","defaultStatus":"affected","versions":[{"version":"2:2.11.7-1.el9_6.1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:rhel_eus:9.6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","packageName":"freerdp","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-23530","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2430877","name":"RHBZ#2430877","tags":["issue-tracking","x_refsource_REDHAT"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23530.json","tags":["x_sadp-csaf-vex"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2714","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2952","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2222","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2081","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:3039","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:3038","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:3036","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:3041","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2770","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2824","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2736","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:3037","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2048","tags":["vendor-advisory","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"namespace":"https://access.redhat.com/security/updates/classification/","value":"Important"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.6,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","description":"Heap-based Buffer Overflow","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat-SADP","orgId":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","dateUpdated":"2026-07-15T01:18:34.586Z"},"datePublic":"2026-01-19T16:58:46.712Z","solutions":[{"lang":"en","value":"RHSA-2026:2714: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"},{"lang":"en","value":"RHSA-2026:2952: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"},{"lang":"en","value":"RHSA-2026:2222: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"},{"lang":"en","value":"RHSA-2026:2081: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"},{"lang":"en","value":"RHSA-2026:3039: Red Hat Enterprise Linux AppStream AUS (v. 8.2)"},{"lang":"en","value":"RHSA-2026:3038: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"},{"lang":"en","value":"RHSA-2026:3036: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6)"},{"lang":"en","value":"RHSA-2026:3041: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"},{"lang":"en","value":"RHSA-2026:2770: Red Hat Enterprise Linux AppStream E4S (v.9.0)"},{"lang":"en","value":"RHSA-2026:2824: Red Hat Enterprise Linux AppStream E4S (v.9.2)"},{"lang":"en","value":"RHSA-2026:2736: Red Hat CodeReady Linux Builder EUS (v.9.4), Red Hat Enterprise Linux AppStream EUS (v.9.4)"},{"lang":"en","value":"RHSA-2026:3037: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"},{"lang":"en","value":"RHSA-2026:2048: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}],"timeline":[{"lang":"en","time":"2026-01-19T18:00:59.270Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-01-19T16:58:46.712Z","value":"Made public."}],"x_adpType":"supplier","x_generator":{"engine":"sadp-cli 1.0.0"}}]}}}