TI-2018-14357 Aliases CVE-2018-20251 GHSA-9p46-rmhc-6xcf

Protection mechanism failure in Check Point Software Technologies Ltd. WinRAR

MEDIUM 49CWE-693Published 2019-02-05 · Updated 2024-09-16

Key facts

Attack vector: Local
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-693.

Summary

In WinRAR versions prior to and including 5.61, there is path traversal vulnerability when crafting the filename field of the ACE format. The UNACE module (UNACEV2.dll) creates files and folders as written in the filename field even when WinRAR validator noticed the traversal attempt and requestd to abort the extraction process. the operation is cancelled only after the folders and files were created but prior to them being written, therefore allowing the attacker to create empty files and folders everywhere in the file system.

Why it matters now

EPSS 0.31404 98th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
Check Point Software Technologies Ltd.	WinRAR	All versions prior and including 5.61	—	No fix listed	CNA

WinRAR VendorCheck Point Software Technologies Ltd. Affected All versions prior and including 5.61 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:rarlab:winrar::::::::	up to 5.61	Vulnerable	RARLAB

cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:* Versions up to 5.61 Vulnerable ·RARLAB

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2018-20251
2026-10-03 Alias added: GHSA-9p46-rmhc-6xcf

References

Exploit 1

https://research.checkpoint.com/extracting-code-execution-from-winrar/

Advisory 1

https://www.win-rar.com/whatsnew.html

TI-2025-07400 Path traversal vulnerability in WinRAR KEVCVSS 4.0HIGH 8.4
TI-2025-05626 Path traversal in RARLAB WinRAR KEVCVSS 3.0HIGH 7.8
TI-2023-20115 RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts… KEVCVSS 3.1HIGH 7.8
TI-2018-14356 Path traversal in Check Point Software Technologies Ltd. WinRAR KEVCVSS 3.1HIGH 7.8
TI-2024-23905 RARLAB WinRAR before 7.00, on Windows, allows attackers to spoof the screen output via… CVSS 3.1HIGH 7.5
TI-2024-22371 RARLAB WinRAR before 7.00, on Linux and UNIX platforms, allows attackers to spoof the… CVSS 3.1HIGH 7.1

See all 27 →

Sources

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