{"cve":"CVE-2021-35331","nvd":{"published":"2021-07-05T15:15:07.997","modified":"2026-06-17T03:57:26.750","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-134"],"references":["https://core.tcl-lang.org/tcl/info/28ef6c0c741408a2","https://core.tcl-lang.org/tcl/info/bad6cc213dfe8280","https://github.com/tcltk/tcl/commit/4705dbdde2f32ff90420765cd93e7ac71d81a222","https://sqlite.org/forum/info/7dcd751996c93ec9","https://core.tcl-lang.org/tcl/info/28ef6c0c741408a2"],"products":["tcl:tcl"],"source":"nvd","synced_at":"2026-10-19T21:20:07.141963181+00:00"},"epss":{"cve":"CVE-2021-35331","score":0.01689,"percentile":0.77055,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}