CVE-2026-62291Patch

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

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0.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Full discourse1 post

PatchHawk@patchhawk_91d
Patch
The worst one is now CVE-2026-62291 - rated High, CVSS 8.2. A HEIF image whose alpha plane is larger than the picture makes libheif's uncompressed encoder write past its heap buffer. The fix adds one guard: do the plane sizes match the image? https://t.co/9YneuqKmr2
Post summary
CVE-2026-62291 is a high‑severity heap buffer overflow in libheif’s uncompressed encoder, and a patch that validates plane sizes has been released.
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