7.8

CVE-2021-35331: tcl

Modified
AliasesSUSE-FU-2022:0484-1SUSE-FU-2022:0868-1DEBIAN-CVE-2021-35331
Published 05-07-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-35331 is a high (CVSS 7.8) vulnerability in tcl. EPSS estimates a 1.69% chance of exploitation in the next 30 days, higher than 77% of scored vulnerabilities. 3 public exploits are recorded.

Priority
Prioritisepublic exploit

Public exploit (reference, Date unknown)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.69%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits3reference

Timeline

  1. 05-07-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.69%

Chance of exploitation in the next 30 days

Percentile

77%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 1.64% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

3 found
  • referenceUnverified

    Exploit Reference (core.tcl-lang.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (core.tcl-lang.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (sqlite.org)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Suse9 products
  • tcl&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 8.6.12-150300.14.3.1
  • tcl&distro=SUSE Linux Enterprise Server 12 SP5< 8.6.12-11.3.1
  • tcl&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 8.6.12-11.3.1
  • tcl&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 8.6.12-11.3.1
  • tk&distro=SUSE Linux Enterprise Module for Basesystem 15 SP3< 8.6.12-150300.10.3.1
Debian1 product
  • tcl8.6All versions (No fix recorded)
Tcl1 product

3 vendors · 11 products

References

16 links
Show all 16 references