CVE-2022-34913
CWE-787Published: July 2, 2022· Updated: Jun 17, 2026
Official Description
md2roff 1.7 has a stack-based buffer overflow via a Markdown file containing a large number of consecutive characters to be processed. NOTE: the vendor's position is that the product is not intended for untrusted input
Risk Analysis
md2roff version 1.7 suffers from a stack-based buffer overflow when processing excessively long character sequences in Markdown files. This vulnerability can lead to arbitrary code execution, resulting in a critical risk rating.
There is no public exploit known, and it is not in the KEV database. The vulnerability is remotely exploitable.
Avoid processing untrusted Markdown files with this tool. Users should seek an alternative or ensure input is strictly sanitized.
Technical Analysis
CVE-2022-34913 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-34913 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts