How severe is CVE-2018-20250?

CVE-2018-20250 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-20250 being actively exploited?

Yes. CVE-2018-20250 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-15, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-20250?

CVE-2018-20250 affects Rarlab Winrar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-20250?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-20250 have an EU (EUVD) identifier?

Yes. CVE-2018-20250 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-12813. It is also flagged as exploited in the EUVD (since 2022-02-15).

When was CVE-2018-20250 published?

CVE-2018-20250 was published on 2019-02-05 and last updated on 2026-08-13.

CVE-2018-20250

CVE-2018-20250 is a high-severity vulnerability in Rarlab Winrar with a CVSS 3.x base score of 7.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-02-15). The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 96% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-02-15)
EU (EUVD) id: EUVD-2018-12813
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-02-15)
Weakness: CWE-22
Affected product: Rarlab Winrar
Published: 2019-02-05
Last modified: 2026-08-13

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.

Frequently asked questions

What is CVE-2018-20250?: 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.
How severe is CVE-2018-20250?: CVE-2018-20250 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-20250 being actively exploited?: Yes. CVE-2018-20250 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-02-15, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-20250?: CVE-2018-20250 affects Rarlab Winrar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-20250?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-20250 have an EU (EUVD) identifier?: Yes. CVE-2018-20250 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-12813. It is also flagged as exploited in the EUVD (since 2022-02-15).
When was CVE-2018-20250 published?: CVE-2018-20250 was published on 2019-02-05 and last updated on 2026-08-13.

References

Affected products (1)

cpe:2.3:a:rarlab:winrar:*:*:*:*:*:*:*:*

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