CVE-2021-35331

Public Exploit

Description

In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file. NOTE: multiple third parties dispute the significance of this finding

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.77% Top 30%
Vendor Advisory tcl-lang.org Vendor Advisory tcl-lang.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://core.tcl-lang.org/tcl/info/bad6cc213dfe8280 exploit vendor advisory
https://core.tcl-lang.org/tcl/info/28ef6c0c741408a2 exploit patch vendor advisory
https://github.com/tcltk/tcl/commit/4705dbdde2f32ff90420765cd93e7ac71d81a222 third party advisory patch
https://sqlite.org/forum/info/7dcd751996c93ec9 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-35331?
CVE-2021-35331 has been scored as a high severity vulnerability.
How to fix CVE-2021-35331?
To fix CVE-2021-35331, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-35331 being actively exploited in the wild?
It is possible that CVE-2021-35331 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.