CVE-2026-21413 Memory corruption in LibRaw
A heap-based buffer overflow in LibRaw allows attackers to execute arbitrary code or cause denial of service via a malicious JPEG file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-21413?
CVE-2026-21413 is a critical memory corruption vulnerability in Libraw Libraw, published on 7 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A heap-based buffer overflow vulnerability exists in the lossless_jpeg_load_raw functionality of LibRaw Commit 0b56545 and 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.
Which versions are affected by CVE-2026-21413?
It affects 1 product.
Linux distribution packages (8)
LibRaw Red Hat:rhel_e4s:9.0::appstream | All versions | 0:0.20.2-6.el9_0 |
LibRaw-debuginfo Red Hat:rhel_e4s:9.0::appstream | All versions | 0:0.20.2-6.el9_0 |
LibRaw-debugsource Red Hat:rhel_e4s:9.0::appstream | All versions | 0:0.20.2-6.el9_0 |
LibRaw-samples-debuginfo Red Hat:rhel_e4s:9.0::appstream | All versions | 0:0.20.2-6.el9_0 |
LibRaw Red Hat:rhel_e4s:9.2::appstream | All versions | 0:0.20.2-6.el9_2 |
LibRaw-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:0.20.2-6.el9_2 |
LibRaw-debugsource Red Hat:rhel_e4s:9.2::appstream | All versions | 0:0.20.2-6.el9_2 |
LibRaw-samples-debuginfo Red Hat:rhel_e4s:9.2::appstream | All versions | 0:0.20.2-6.el9_2 |
Products include Libraw Libraw.
How do I fix CVE-2026-21413?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-21413 being exploited?
There is no known exploitation of CVE-2026-21413 in the wild and no public exploit code.
Other vulnerabilities in Libraw Libraw
Sources
Also known as AZL-82955, CLSA-2026-1777889999, CLSA-2026-1777941038, DEBIAN-CVE-2026-21413, ECHO-602f-3dc6-d1d6, GHSA-g53g-r75r-95g5 and 4 more.