# Gnoppix Security Announcement - 2026-09-28T07:50:30.139-04:00

**URL:** <https://forum.gnoppix.org/t/gnoppix-security-announcement-2026-09-28t0730-139-04-00/7471>\
**Category:** Issues and Help\
**Created:** [September 28, 2026, 11:50am UTC](https://forum.gnoppix.org/t/gnoppix-security-announcement-2026-09-28t0730-139-04-00/7471 "2026-09-28T11:50:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![amu](https://forum.gnoppix.org/user_avatar/forum.gnoppix.org/amu/32/7_2.png) [@amu](https://forum.gnoppix.org/u/amu)\
**Post date:** [September 28, 2026, 11:50am UTC](https://forum.gnoppix.org/t/gnoppix-security-announcement-2026-09-28t0730-139-04-00/7471/1 "2026-09-28T11:50:30Z")

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## GSA-6523-1: libheif Security Update

> Gnoppix Security released GSA-6523-1 to fix libheif vulnerabilities.

- **Affected:** Gnoppix 24/25 (oldstable) and 26 (stable).
- **Action:** Upgrade libheif now. - Please update your systems.