What is CVE-2025-27363?

CVE-2025-27363 is a high-severity vulnerability in Freetype, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2025-03-11.

How severe is CVE-2025-27363?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2025-27363 known to be exploited?

Yes. CVE-2025-27363 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-06), indicating it is being actively exploited. 17 public proof-of-concept repositories are indexed.

Buffer overflow in Freetype

CVE-2025-27363

An out of bounds write exists in FreeType versions 2.13.0 and below (newer versions of FreeType are not vulnerable) when attempting to parse font subglyph structures related to TrueType GX and variable font files. The vulnerable code assig…

Vulnerability class: Buffer Overflow

EPSS: 0.260 (97.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freetype — versions 0.0.0
Debian Debian_linux — versions 11.0

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2025-05-06. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2025-05-27.

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public proof-of-concept exploits

References

cve-assign@fb.com (x_refsource_CONFIRM, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List)

Frequently asked questions

What is CVE-2025-27363?: CVE-2025-27363 is a high-severity vulnerability in Freetype, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2025-03-11.
How severe is CVE-2025-27363?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2025-27363 known to be exploited?: Yes. CVE-2025-27363 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-05-06), indicating it is being actively exploited. 17 public proof-of-concept repositories are indexed.