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CVE-2026-23951: Out-of-bounds Read

🗓️ 22 Jan 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com

Out-of-bounds heap read in SumatraPDF PalmDbReader::GetRecord via crafted Mobi files.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-23951
22 Jan 202600:17
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circl
Circl
CVE-2026-23951
22 Jan 202601:30
–circl
cnnvd
CNNVD
sumatrapdf numerical error vulnerability
22 Jan 202600:00
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cve
CVE
CVE-2026-23951
22 Jan 202600:17
–cve
cvelist
Cvelist
CVE-2026-23951 SumatraPDF's Integer Underflow in PalmDbReader Leads to Crash
22 Jan 202600:17
–cvelist
euvd
EUVD
EUVD-2026-4205
22 Jan 202600:17
–euvd
nvd
NVD
CVE-2026-23951
22 Jan 202601:15
–nvd
ptsecurity
Positive Technologies
PT-2026-3887
22 Jan 202600:00
–ptsecurity
redhatcve
RedhatCVE
CVE-2026-23951
23 Jan 202600:26
–redhatcve
vulnrichment
Vulnrichment
CVE-2026-23951 SumatraPDF's Integer Underflow in PalmDbReader Leads to Crash
22 Jan 202600:17
–vulnrichment

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17 Feb 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.5
EPSS0.00224
SSVC
0