{"id":"CVE-2025-2520","state":"PUBLISHED","title":"Dereferencing of an uninitialized pointer leads to denial of service.","description":"The Honeywell Experion PKS contains an Uninitialized Variable in the common Epic Platform Analyzer (EPA) communications. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a dereferencing of an uninitialized pointer leading to a denial of service.\n\n\n\nHoneywell recommends updating to the most recent version of \n\nHoneywell Experion PKS: 520.2 TCU9 HF1and 530.1 TCU3 HF1. The affected Experion PKS products are \n\nC300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM.  The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3.","publishedAt":"2025-07-10T19:54:35.250Z","updatedAt":"2025-08-04T19:44:48.506Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"Honeywell"},"assigner":"Honeywell","products":["Honeywell C300 PCNT02","Honeywell EHB","Honeywell EHPM","Honeywell ELMM","Honeywell Classic ENIM","Honeywell ETN","Honeywell FIM4","Honeywell FIM8","Honeywell PGM","Honeywell RFIM"],"affected":[{"vendor":"Honeywell","product":"C300 PCNT02","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"EHB","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"EHPM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"ELMM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"Classic ENIM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"ETN","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"FIM4","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"FIM8","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"PGM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"RFIM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]}],"references":["https://process.honeywell.com/"],"weaknesses":["CWE-457"],"ingestedAt":"2026-10-29T20:08:55.257Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/2xxx/CVE-2025-2520.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-2520","state":"PUBLISHED","datePublished":"2025-07-10T19:54:35.250Z","dateUpdated":"2025-08-04T19:44:48.506Z","assignerShortName":"Honeywell","assignerOrgId":"0dc86260-d7e3-4e81-ba06-3508e030ce8d","dateReserved":"2025-03-19T13:57:27.868Z"},"containers":{"cna":{"title":"Dereferencing of an uninitialized pointer leads to denial of service.","descriptions":[{"lang":"en","value":"The Honeywell Experion PKS contains an Uninitialized Variable in the common Epic Platform Analyzer (EPA) communications. An attacker could potentially exploit this vulnerability, leading to a Communication Channel Manipulation, which results in a dereferencing of an uninitialized pointer leading to a denial of service.\n\n\n\nHoneywell recommends updating to the most recent version of \n\nHoneywell Experion PKS: 520.2 TCU9 HF1and 530.1 TCU3 HF1. The affected Experion PKS products are \n\nC300 PCNT02, EHB, EHPM, ELMM, Classic ENIM, ETN, FIM4, FIM8, PGM, and RFIM.  The Experion PKS versions affected are from 520.1 through 520.2 TCU9 and from 530 through 530 TCU3."}],"affected":[{"vendor":"Honeywell","product":"C300 PCNT02","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"EHB","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"EHPM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"ELMM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"Classic ENIM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"ETN","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"FIM4","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"FIM8","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"PGM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]},{"vendor":"Honeywell","product":"RFIM","defaultStatus":"unaffected","versions":[{"version":"520.1","status":"affected","lessThanOrEqual":"520.2 TCU9","versionType":"semver"},{"version":"530","status":"affected","lessThanOrEqual":"530 TCU3","versionType":"semver"}],"platforms":["Experion PKS"]}],"references":[{"url":"https://process.honeywell.com/"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-457","description":"CWE-457 Use of Uninitialized Variable","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Honeywell","orgId":"0dc86260-d7e3-4e81-ba06-3508e030ce8d","dateUpdated":"2025-08-04T19:44:48.506Z"},"credits":[{"lang":"en","type":"finder","value":"Demid Uzenkov and Kirill Kutaev (Positive Technologies)"}],"impacts":[{"capecId":"CAPEC-216","descriptions":[{"lang":"en","value":"CAPEC-216 Communication Channel Manipulation"}]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-07-10T20:33:19.670618Z","id":"CVE-2025-2520","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":"2025-07-10T20:33:30.482Z"}}]}}}