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Libraw CVE-2026-21413

| EUVDEUVD-2026-19624 CRITICAL
Improper Validation of Array Index (CWE-129)
2026-04-07 talos GHSA-g53g-r75r-95g5
Buffer Overflow Libraw
9.8
CVSS 3.1 · Vendor: talos
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Severity by source

Vendor (talos) PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SUSE
CRITICAL
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from Vendor (talos).

CVSS VectorVendor: talos

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Patch released
Apr 09, 2026 - 14:30 nvd
Patch available
EUVD ID Assigned
Apr 07, 2026 - 14:30 euvd
EUVD-2026-19624
Analysis Generated
Apr 07, 2026 - 14:30 vuln.today
CVE Published
Apr 07, 2026 - 13:49 nvd
CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

Heap-based buffer overflow in LibRaw's lossless JPEG processing (commits 0b56545 and d20315b) allows unauthenticated remote attackers to achieve arbitrary code execution by providing a malicious image file. The vulnerability scores CVSS 9.8 (Critical) with network attack vector, low complexity, and no authentication required. No CISA KEV listing or public exploit identified at time of analysis, though Talos Intelligence has published detailed vulnerability research (TALOS-2026-2331).

Technical ContextAI

LibRaw is an open-source library for reading and processing RAW image files from digital cameras, widely integrated into image processing applications and photography workflows. This vulnerability resides in the lossless_jpeg_load_raw function, which handles JPEG lossless compression parsing within RAW image formats. The root cause is CWE-129 (Improper Validation of Array Index), where insufficient bounds checking on array indices during JPEG decompression allows an attacker-controlled index to write beyond allocated heap memory. The CPE identifier cpe:2.3:a:libraw:libraw identifies the affected library, with specific vulnerable commits 0b56545 and d20315b cited. Heap-based buffer overflows in image parsers are particularly dangerous because they process untrusted external data and can corrupt memory management structures, leading to control flow hijacking.

RemediationAI

Organizations should immediately audit LibRaw deployments to determine if vulnerable commits 0b56545 or d20315b are present in production systems. Upstream fix availability not independently confirmed from available data; consult the official LibRaw GitHub repository and Talos advisory at https://talosintelligence.com/vulnerability_reports/TALOS-2026-2331 for current patch status and recommended mitigation steps. If patches are unavailable, implement defense-in-depth controls including strict input validation on image file uploads, sandboxing image processing operations in isolated environments with limited privileges, and deploying intrusion detection signatures for malformed JPEG lossless compressed images. For applications accepting user-uploaded images, consider implementing file format restrictions to reject RAW image formats entirely if not business-critical, or pre-process uploads through a hardened conversion service. Monitor LibRaw project announcements for stable release incorporating the fix and prioritize upgrade testing once available.

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Same weakness CWE-129 – Improper Validation of Array Index

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Same technique Buffer Overflow

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CVE-2009-0927 HIGH POC
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8.8

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
SUSE Linux Enterprise Server 15 SP7 Fixed

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CVE-2026-21413 vulnerability details – vuln.today
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