Dashboard / CVE-2026-120252

CVE-2026-120252

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 39/100
Published: 2026-11-01 Modified: 2026-11-02 First seen: 2026-11-01 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: None
VI: None
VA: High

Description

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
cgohlke imagecodecs 2023.1.23
cgohlke imagecodecs 2023.1.23

References & Advisories (4)

Bug Bounty Relevance

39 / 100
✓ No authentication
✓ Low complexity

CVSS Score

6.8 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.14%
Raw Score 0.001370
Percentile 3.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00137
2026-11-12
0.00137
2026-11-10
0.00137
2026-11-09
0.00137
2026-11-08
0.00137
2026-11-07
0.00137
2026-11-06
0.00137
2026-11-05
0.00137
2026-11-04
0.00137
2026-11-03
0.00137
2026-11-02
0.00137
2026-11-01
0.00137

Intelligence Sources

mitre ref →
nvd ref →

External Links