Is CVE-2018-20250 in the CISA KEV catalog?

Yes. CVE-2018-20250 is on the CISA Known Exploited Vulnerabilities list, added 2022-02-15, and has known ransomware campaign use.

What is the CVSS severity of CVE-2018-20250?

CVE-2018-20250 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2018-20250?

CVE-2018-20250 has an EPSS score of 96.27% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2018-20250?

No published fix for CVE-2018-20250 has been found yet. It is on the CISA Known Exploited Vulnerabilities list; federal agencies must remediate by 2022-08-15. Apply the vendor's mitigations per CISA's guidance.

CVE & CISA-KEV Catalog

CVE-2018-20250

HIGHCISA KEVEPSS 100th pctl

7.8

CVSS v3

NVD

Description

In WinRAR versions prior to and including 5.61, There is path traversal vulnerability when crafting the filename field of the ACE format (in UNACEV2.dll). When the filename field is manipulated with specific patterns, the destination (extraction) folder is ignored, thus treating the filename as an absolute path.

CWE-36 CWE-22Path Traversal

How to fix

Actively exploited, no published fix found yet

CISA required action: Apply updates per vendor instructions.

Federal remediation due: 2022-08-15

Known ransomware campaign use

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Intelligence

96.27%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

WinRAR Absolute Path Traversal Vulnerability

WinRAR Absolute Path Traversal vulnerability leads to Remote Code Execution

Apply updates per vendor instructions.

Remediation due: 2022-08-15

Associated with ransomware campaigns

References

Exploit5

Third-Party Advisory2

Government Resource1

cisa.gov

Release Notes1

win-rar.com

Related Vulnerabilities

Other CWE-36 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-13159	Critical	9.8	100%	KEV	Fix
CVE-2024-48248	High	8.6	94%	KEV	Fix
CVE-2024-13160	Critical	9.8	91%	KEV	Fix
CVE-2024-13161	Critical	9.8	90%	KEV	Fix
CVE-2023-3765	Critical	10.0	67%	-	Fix
CVE-2025-0851	Critical	9.8	23%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-31.