CVE-2025-27363Known exploitationPublic exploitNetwork attack vector

Arbitrary code execution via subglyph allocation wrap

Published Mar 11, 2025 · Updated Apr 19, 2026

Out-of-bounds write in FreeType 2.13.0 and earlier allows remote attackers to execute arbitrary code via a crafted variable font. During TrueType GX and variable-font subglyph parsing, a signed short is converted to unsigned long before four is added, wrapping the size and allocating an undersized heap buffer. Processing the font can then write up to six signed long integers beyond that buffer, causing a crash or arbitrary code execution without authentication or user interaction.

CVSS severity8.1
High
EPSS probability27.77%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in FreeType 2.13.0 and earlier allows remote attackers to execute arbitrary code via a crafted variable font. During TrueType GX and variable-font subglyph parsing, a signed short is converted to unsigned long before four is added, wrapping the size and allocating an undersized heap buffer. Processing the font can then write up to six signed long integers beyond that buffer, causing a crash or arbitrary code execution without authentication or user interaction.

The record

CVE
CVE-2025-27363
Published
Mar 11, 2025
Updated
Apr 19, 2026
Vendor
FreeType
Product
FreeType
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0.0 <=2.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FreeType · FreeTypeversion=0.0.0 <=2.13.0

Published CVSS scores

8.1Meta Platforms, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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