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TI-2017-09493 Aliases CVE-2017-12814GHSA-6g5g-x3hj-6v2x

Stack-based buffer overflow in the CPerlHost::Add method in win32/perlhost.h in Perl…

Priority MEDIUM 52CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Stack-based buffer overflow in the CPerlHost::Add method in win32/perlhost.h in Perl before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 on Windows allows attackers to execute arbitrary code via a long environment variable.

Why it matters now

EPSS 0.06981 94th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*up to 5.24.2VulnerablePerl
cpe:2.3:a:perl:perl:5.26.0:*:*:*:*:*:*:*5.26.0VulnerablePerl
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:* Versions up to 5.24.2 Vulnerable ·Perl
  • cpe:2.3:a:perl:perl:5.26.0:*:*:*:*:*:*:* Versions 5.26.0 Vulnerable ·Perl
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12814
  2. 2026-10-03 Alias added: GHSA-6g5g-x3hj-6v2x

References

Exploit 1

Advisory 2

Other 2

  • TI-2022-24100 In Perl 5.34.0, function S_find_uninit_var in sv.c has a stack-based crash that can lead… CVSS 3.1CRITICAL 9.8
  • TI-2012-05140 The _compile function in Maketext.pm in the Locale::Maketext implementation in Perl… CVSS 2.0HIGH 7.5
  • TI-2018-12932 Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular… CVSS 3.0CRITICAL 9.8
  • TI-2018-12931 Perl before 5.26.3 and 5.28.x before 5.28.1 has a buffer overflow via a crafted regular… CVSS 3.0CRITICAL 9.8
  • TI-2018-05049 Heap-based buffer overflow in the pack function in Perl before 5.26.2 allows… CVSS 3.0CRITICAL 9.8
  • TI-2018-12934 Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations. CVSS 3.0CRITICAL 9.8
See all 45 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences