CVE-2021-35331
CVSS v3
7.8
HIGH
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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
Technical details
- Published
- 2021-07-05
Frequently asked questions
What is CVE-2021-35331?
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
Is CVE-2021-35331 actively exploited?
Active exploitation of CVE-2021-35331 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-35331?
CVE-2021-35331 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-35331 affecting your environment?
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