High severity · published Jul 5, 2021
CVE-2021-35331
In Tcl 8.6.11, a format string vulnerability in nmakehlp.c might allow code execution via a crafted file
7.8
CVSS
1.7%
EPSS
No
On KEV
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
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tcl · Tcl
8.6.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-35331
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-35331
Exploit
https://core.tcl-lang.org/tcl/info/28ef6c0c741408a2
Exploit
https://core.tcl-lang.org/tcl/info/bad6cc213dfe8280
Patch
https://github.com/tcltk/tcl/commit/4705dbdde2f32ff90420765cd93e7ac71d81a222
Exploit
https://sqlite.org/forum/info/7dcd751996c93ec9