{"id":"CVE-2026-26201","state":"PUBLISHED","title":"emp3r0r Affected by Concurrent Map Access DoS (panic/crash)","description":"emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue.","publishedAt":"2026-02-19T19:21:05.691Z","updatedAt":"2026-02-19T21:22:50.955Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["jm33-m0 emp3r0r"],"affected":[{"vendor":"jm33-m0","product":"emp3r0r","versions":[{"version":"< 3.21.2","status":"affected"}]}],"references":["https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc","https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5","https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2"],"weaknesses":["CWE-362","CWE-663"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/26xxx/CVE-2026-26201.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-26201","state":"PUBLISHED","datePublished":"2026-02-19T19:21:05.691Z","dateUpdated":"2026-02-19T21:22:50.955Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-11T19:56:24.813Z"},"containers":{"cna":{"title":"emp3r0r Affected by Concurrent Map Access DoS (panic/crash)","descriptions":[{"lang":"en","value":"emp3r0r is a C2 designed by Linux users for Linux environments. Prior to version 3.21.2, multiple shared maps are accessed without consistent synchronization across goroutines. Under concurrent activity, Go runtime can trigger `fatal error: concurrent map read and map write`, causing C2 process crash (availability loss). Version 3.21.2 fixes this issue."}],"affected":[{"vendor":"jm33-m0","product":"emp3r0r","versions":[{"version":"< 3.21.2","status":"affected"}]}],"references":[{"url":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc","name":"https://github.com/jm33-m0/emp3r0r/security/advisories/GHSA-f5p9-j34q-pwcc","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5","name":"https://github.com/jm33-m0/emp3r0r/commit/ea4d074f081dac6293f3aec38f01def5f08d5af5","tags":["x_refsource_MISC"]},{"url":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2","name":"https://github.com/jm33-m0/emp3r0r/releases/tag/v3.21.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"HIGH","baseScore":7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-362","lang":"en","description":"CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-663","lang":"en","description":"CWE-663: Use of a Non-reentrant Function in a Concurrent Context","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-02-19T19:21:05.691Z"},"source":{"advisory":"GHSA-f5p9-j34q-pwcc","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-19T21:15:33.676053Z","id":"CVE-2026-26201","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-19T21:22:50.955Z"}}]}}}