CVE-2026-120252 (GCVE-0-2026-120252)

Vulnerability from cvelistv5 – Published: 2026-11-01 00:57 – Updated: 2026-11-02 17:44
VLAI
Title
imagecodecs 2023.1.23 through 2026.10.10 Stack Buffer Overflow via jpegsof3_decode()
Summary
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.
Severity
6.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 17:04 UTC
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7195 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
cgohlke imagecodecs Affected: 2023.1.23 , ≤ 2026.10.10 (custom)
guessed Create a notification for this product.
Date Public
2026-10-10 00:00
Credits
Dilanka Kaushal Hewage (r3vpwnx)
Show details on NVD website
To clipboard 

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