Threats Tagged 'cve-2026-23951'
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Threats Tagged 'cve-2026-23951'
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CVE-2026-23951 is a medium severity vulnerability in SumatraPDF (versions up to 3.5.2rel) caused by an off-by-one error in PalmDbReader::GetRecord when processing crafted Mobi files. This leads to an integer underflow during size calculation, resulting in an out-of-bounds heap read that crashes the application. Exploitation requires local access and user interaction to open a malicious file, with no impact on confidentiality or integrity, only availability. No patches are currently available, and no known exploits exist in the wild. European organizations using SumatraPDF for document reading may experience denial of service if targeted. Mitigation involves avoiding opening untrusted Mobi files and monitoring for updates from the vendor. Countries with higher usage of SumatraPDF and significant document handling needs, such as Germany, France, and the UK, are most likely to be affected. Join the discussion | CVE Database V5 | 01/22/2026, 00:17:10 UTC Added: 01/22/2026, 00:50:57 UTC |
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