CVE-2026-20889
Critical · CVSS 9.8LibRaw — Heap-based buffer overflow (integer overflow leading to buffer overflow)
- CVSS
- 9.8
- nvd
- EPSS
- —
- KEV
- No
- Class
- other
- CWE-190, CWE-120
Description
A heap-based buffer overflow vulnerability exists in the x3f_thumb_loader functionality of LibRaw Commit d20315b. A specially crafted malicious file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.
Search profile — drives PoC discovery
Symbols x3f_thumb_loaderx3f_load_thumbLibRaw::x3f_thumb_loaderx3f_thumb_datax3f_load_image_sectionX3F_THUMBimgdata.thumbnail
Keywords CVE-2026-20889LibRawx3f_thumb_loaderheap buffer overflowTALOS-2026-2358d20315bx3f thumbnailLibRaw PoCCWE-190 LibRawCWE-120 LibRawLibRaw heap overflow x3f
Versions: Commit d20315b (and versions prior to fix)
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2026-2358
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2358
- https://access.redhat.com/errata/RHSA-2026:13284
- https://access.redhat.com/errata/RHSA-2026:14224
- https://access.redhat.com/errata/RHSA-2026:14655
- https://access.redhat.com/errata/RHSA-2026:14673
- https://access.redhat.com/security/cve/CVE-2026-20889
- https://bugzilla.redhat.com/show_bug.cgi?id=2455942
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20889.json
Status: enriched · ingested 2026-06-30T06:00:22.000Z · profiled 2026-06-30T18:30:14.000Z