CVE-2021-34121

HIGH

htmldoc 1.9.12 - Out-of-Bounds Read in parse_tree() Function

Title source: llm
STIX 2.1

Description

An Out of Bounds flaw was discovered in htmodoc 1.9.12 in function parse_tree() in toc.cxx, this possibly leads to memory layout information leaking in the data. This might be used in a chain of vulnerability in order to reach code execution.

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.0031
EPSS Percentile 22.7%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-125
Status published
Products (1)
htmldoc_project/htmldoc 1.9.12
Published Jul 18, 2023
Tracked Since Feb 18, 2026