Secuno
ENNL
Book demo

CVE-2026-20889

Libraw buffer overflow

9.8 CRITICALPublic exploitEPSS 0.80%
  1. Published7 Apr 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Libraw0.22.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-9722910.0
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before…
CVE-2026-1089159.9
A vulnerability has been found in Edimax BR-6208AC 1.32. This affects an unknown part…
CVE-2026-1089149.9
A flaw has been found in Edimax BR-6208AC 1.32. Affected by this issue is some unknown…
CVE-2026-153409.8
lwIP SMTP client does not check the size of inputs, potentially allowing a buffer…
CVE-2026-195708.8
The LE Audio Broadcast Sink in subsys/bluetooth/audio/bap_broadcast_sink.c copies…
CVE-2026-195698.8
dynamic_object_create() in kernel/userspace/userspace.c computed the backing allocation…

Frequently asked

Is CVE-2026-20889 being actively exploited?

CVE-2026-20889 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.80%.

How severe is CVE-2026-20889?

CVE-2026-20889 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.80% probability of exploitation.

Which products are affected by CVE-2026-20889?

Affected products include Libraw.

How do I fix CVE-2026-20889?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-20889 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.