CVE-2021-26948

Name: CVE-2021-26948
Creator: NVD / NIST
Published: 2022-03-03T23:15:08.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2021-26948 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.79%

51.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Htmldoc Project	Htmldoc	1.9.11

References

https://github.com/michaelrsweet/htmldoc/issues/410Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/michaelrsweet/htmldoc/issues/410Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Mar 3, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-26948?

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

How severe is CVE-2021-26948?

CVE-2021-26948 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-26948?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-26948?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST