{"id":"CVE-2023-21406","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-21406","generatedAt":"2026-10-27T19:05:24.950Z","title":"A heap-based buffer overflow was found in the pacsiod process which is handling the OSDP communication allowing to write outside of the allocated buffer.","description":"Ariel Harush and Roy Hodir from OTORIO have found a flaw in the AXIS A1001 when\ncommunicating over OSDP. A heap-based buffer overflow was found in the pacsiod process which\nis handling the OSDP communication allowing to write outside of the allocated buffer. By\nappending invalid data to an OSDP message it was possible to write data beyond the heap\nallocated buffer. The data written outside the buffer could be used to execute arbitrary code. \n\nlease refer to the Axis security advisory for more information, mitigation and affected products and software versions.","published":"2023-07-25T08:15:10.000Z","lastModified":"2026-06-17T05:32:32.000Z","status":"Modified","sourceIdentifier":"product-security@axis.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-122","CWE-787","CWE-120"],"affected":["axis/a1001 firmware"],"epss":{"score":0.00308,"percentile":0.23368,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.axis.com/dam/public/1b/21/5f/cve-2023-21406-en-US-407245.pdf","tags":["Vendor Advisory"],"source":"product-security@axis.com"},{"url":"https://www.axis.com/dam/public/1b/21/5f/cve-2023-21406-en-US-407245.pdf","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-21406","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}