CVE-2026-120252 — Vulnerability intelligence
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Published:
- CVSS
- 6.8
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
imagecodecs 2023.1.23 through 2026.10.10 contains a stack-based buffer overflow vulnerability in the lossless JPEG Define Huffman Table parser in decode_jpegsof3(). Attackers can supply a crafted lossless JPEG whose DHT symbol counts wrap an 8-bit sum, overflowing the 32-entry HufVal and HufSz stack arrays and crashing the calling process.