What is CVE-2022-34033?

CVE-2022-34033 is a high-severity vulnerability in Htmldoc Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-07-18.

How severe is CVE-2022-34033?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Htmldoc Project

CVE-2022-34033

HTMLDoc v1.9.15 was discovered to contain a heap overflow via (write_header) /htmldoc/htmldoc/html.cxx:273.

Vulnerability class: Buffer Overflow

Published 2022-07-18 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (75.6th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.016 · change: +0.001

Affected products

Htmldoc Project — versions 1.9.15

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/michaelrsweet/htmldoc/issues/425 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/michaelrsweet/htmldoc/commit/ee778252faebb721afba5a081dd6ad7eaf20eef3 (Patch, Third Party Advisory)
github.com/michaelrsweet/htmldoc/commit/a0014be47d614220db111b360fb6170ef6f3937e (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-34033?: CVE-2022-34033 is a high-severity vulnerability in Htmldoc Project, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2022-07-18.
How severe is CVE-2022-34033?: High severity. CVSS v3 base score is 7.5 out of 10.