CVE-2026-20889 | LibRaw d20315b File x3f_thumb_loader integer overflow (TALOS-2026-2358)

VDB-355752 · CVE-2026-20889 · TALOS-2026-2358 LIBRAW D20315B FILE X3F_THUMB_LOADER INTEGER OVERFLOW HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.9 $0-$5k 1.66+ Summaryinfo A vulnerability described as critical has been identified in LibRaw d20315b. Affected by this issue is the function x3f_thumb_loader of the component File Handler. The manipulation results in integer overflow. This vulnerability is reported as CVE-2026-20889. The attack can be launched remotely. No exploit exists. Applying a patch is advised to resolve this issue. Detailsinfo A vulnerability classified as critical has been found in LibRaw d20315b. Affected is the function x3f_thumb_loader of the component File Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: 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. The advisory is shared for download at talosintelligence.com. This vulnerability is traded as CVE-2026-20889 since 01/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. Applying a patch is able to eliminate this problem. Productinfo Type Image Processing Software Name LibRaw Version d20315b License open-source CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 8.0 VulDB Meta Temp Score: 7.9 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.8 CNA Vector (talos): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Integer overflow CWE: CWE-190 / CWE-189 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Patch Status: 🔍 0-Day Time: 🔒 Timelineinfo 01/26/2026 CVE reserved 04/07/2026 +70 days Advisory disclosed 04/07/2026 +0 days VulDB entry created 04/07/2026 +0 days VulDB entry last update Sourcesinfo Advisory: TALOS-2026-2358 Status: Confirmed CVE: CVE-2026-20889 (🔒) GCVE (CVE): GCVE-0-2026-20889 GCVE (VulDB): GCVE-100-355752 Entryinfo Created: 04/07/2026 16:38 Changes: 04/07/2026 16:38 (64) Complete: 🔍 Cache ID: 99:7A3:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸