HIGH

CVE-2021-43579

Q: Is CVE-2021-43579 actively exploited?

Active exploitation of CVE-2021-43579 has not been confirmed. Its EPSS score was 7.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2021-43579?

CVE-2021-43579 has a CVSS v3 base score of 7.8 (HIGH severity).

CVSS v3

7.8

HIGH

EPSS Score

7.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2021-43579 Red Hat Product Security
htmldoc: stack-based buffer overflow in image_load_bmp() in htmldoc/image.cxx

Full record on NVD

Description

A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.

Technical details

Published: 2022-01-10
Exploit-DB: EDB-52425

Frequently asked questions

What is CVE-2021-43579?

A stack-based buffer overflow in image_load_bmp() in HTMLDOC <= 1.9.13 results in remote code execution if the victim converts an HTML document linking to a crafted BMP file.

Is CVE-2021-43579 actively exploited?

Active exploitation of CVE-2021-43579 has not been confirmed. Its EPSS score was 7.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-43579?

CVE-2021-43579 has a CVSS v3 base score of 7.8 (HIGH severity).

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