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CVE-2026-20889

Published: Apr 7, 2026Updated: Apr 10, 2026 Sources: CVE List NVDCWE-190
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
0.5%
Top 61.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

LibRawLibRaw
LibraryLibrary
OSS Libraries / generic-library
librawlibraw
LibraryLibrary
OSS Libraries / generic-library
librawoss-projectOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://talosintelligence.com/vulnerability_reports/TALOS-2026-2358
talosintelligence.com
https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2358
talosintelligence.com

Timeline

Published
Apr 7, 2026
Last Updated
Apr 10, 2026

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