CVE-2025-27363

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Summary

CVECVE-2025-27363
StatePUBLISHED
Assignerfacebook
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-03-11 14:15:25 UTC
Updated2026-04-16 19:16:31 UTC
DescriptionAn 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 assigns a signed short value to an unsigned long and then adds a static value causing it to wrap around and allocate too small of a heap buffer. The code then writes up to 6 signed long integers out of bounds relative to this buffer. This may result in arbitrary code execution. This vulnerability may have been exploited in the wild.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

EPSS: 0.634390000 probability, percentile 0.984160000 (date 2026-04-16)

CISA KEV: Listed on 2025-05-06; due 2025-05-27; ransomware use Unknown

Problem Types: CWE-787 | Out-of-bounds Write (CWE-787) | CWE-787 CWE-787 Out-of-bounds Write

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C/CR:H/IR:H/...

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CISA Known Exploited Vulnerability

VendorFreeType
ProductFreeType
NameFreeType Out-of-Bounds Write Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
NotesThis vulnerability affects a common open-source component, third-party library, or a protocol used by different products. Please check with specific vendors for information on patching status. For more information, please see: https://source.android.com/docs/security/bulletin/2025-05-01 ; https://nvd.nist.gov/vuln/detail/CVE-2025-27363

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 11.0 All All All
Application Freetype Freetype All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA FreeType FreeType affected 0.0.0 2.13.0 semver Not specified

References

ReferenceSourceLinkTags
www.openwall.com/lists/oss-security/2025/03/13/8 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2026/04/16/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
www.openwall.com/lists/oss-security/2025/03/13/12 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
source.android.com/docs/security/bulletin/2025-05-01 134c704f-9b21-4f2e-91b3-4a467353bcc0 source.android.com Third Party Advisory
www.openwall.com/lists/oss-security/2025/03/13/11 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.facebook.com/security/advisories/cve-2025-27363 [email protected] www.facebook.com Third Party Advisory
lists.debian.org/debian-lts-announce/2025/03/msg00030.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List
www.openwall.com/lists/oss-security/2025/03/13/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/03/13/2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
www.openwall.com/lists/oss-security/2025/03/13/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/03/14/4 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/03/14/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/03/14/2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/03/14/1 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
www.openwall.com/lists/oss-security/2025/05/06/3 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2025-05-06T00:00:00.000ZCVE-2025-27363 added to CISA KEV
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