CVE-2026-18495
mediumpriority · track · 24EPSS 0.001 · 2 %ileDEFRUSEPSS · scored 2026-10-27
A flaw was found in libtiff. A heap-buffer overflow vulnerability exists in the `tiff2pdf` utility due to an integer truncation error when processing crafted BigTIFF files. An attacker can provide a specially crafted BigTIFF file, causing a 64-bit `StripByteCounts` value to be truncated to a 32-bit integer. This leads to an undersized memory allocation and a subsequent out-of-bounds memory copy, resulting in a crash and severe memory corruption.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3338libTIFF: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-09-13csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in libTIFF ausnutzen, um einen Denial-of-Service-Zustand oder eine Speicherbeschädigung zu verursachen.
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
sources
Which sources assert this record, and when.
references (5) nvd
External citations — patches, advisories, analysis.
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