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TI-2017-09583 Aliases CVE-2017-12938GHSA-hc8j-qhm9-c5f4

UnRAR before 5.5.7 allows remote attackers to bypass a directory-traversal protection…

Priority LOW 38CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.

Summary

UnRAR before 5.5.7 allows remote attackers to bypass a directory-traversal protection mechanism via vectors involving a symlink to the . directory, a symlink to the .. directory, and a regular file.

Why it matters now

EPSS 0.03048 87th 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 · 1

CPEVersionsRoleVendor
cpe:2.3:a:rarlab:unrar:*:*:*:*:*:*:*:*up to 5.5.6VulnerableRARLAB
  • cpe:2.3:a:rarlab:unrar:*:*:*:*:*:*:*:* Versions up to 5.5.6 Vulnerable ·RARLAB

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-12938
  2. 2026-10-03 Alias added: GHSA-hc8j-qhm9-c5f4

References

Exploit 1

  • TI-2022-12568 RARLAB UnRAR before 6.12 on Linux and UNIX allows directory traversal to write to files… KEVCVSS 3.1CRITICAL 9.8
  • TI-2012-05408 A VMSF_DELTA memory corruption was discovered in unrar before 5.5.5, as used in Sophos… CVSS 3.0CRITICAL 9.8
  • TI-2017-09587 libunrar.a in UnRAR before 5.5.7 has a buffer overflow in the Unpack::LongLZ function. CVSS 3.0CRITICAL 9.8
  • TI-2017-09586 libunrar.a in UnRAR before 5.5.7 has an out-of-bounds read in the Unpack::Unpack20 function. CVSS 3.0CRITICAL 9.8
  • TI-2017-09585 libunrar.a in UnRAR before 5.5.7 has an out-of-bounds read in the EncodeFileName::Decode… CVSS 3.0CRITICAL 9.8
  • TI-2017-10285 unrar 0.0.1 (aka unrar-free or unrar-gpl) suffers from a stack-based buffer over-read in… CVSS 3.1CRITICAL 9.1
See all 13 →

Sources

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