CVE-2021-33391
CRITICALCVSS 9.8/10EPSS 1.13%
Last modified
CVE-2021-33391 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.
Description
An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Htacg | Tidy | 5.7.28 |
References
- https://github.com/htacg/tidy-html5/issues/946Exploit, Patch
- https://github.com/htacg/tidy-html5/issues/946Exploit, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33391?
An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.
How severe is CVE-2021-33391?
CVE-2021-33391 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33391?
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-2021-33391?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST