CVE-2025-27363
Confirmed PUBLISHEDAn 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...
392 days faster than CISA KEV
Recommended Action
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
At a Glance
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 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.
- CVE Published
- Mar 11, 2025
- Exploitation Reported
- May 16, 2025
- CVSS
- 8.1 High
- EPSS
- 26.0%
Affected Versions
| Vendor | Product | Version | Status |
|---|---|---|---|
| FreeType |
FreeType
|
0.0.0 to <= 2.13.0 |
Affected |
CVE References
- facebook.com/security/advisories/cve-2025-27363 facebook.com · CVE Record https://www.facebook.com/security/advisories/cve-2025-27363
Recommended Actions
- Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
- Check enrichment artifacts for scanner coverage and available PoCs before rolling remediation validation.
- Use the Pro API to automate enrichment, telemetry, and workflow delivery for VM, SOC, and CTI pipelines.
Known Exploited Vulnerability Sources
Catalogues that list this CVE as a known exploited vulnerability.
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CyberInsider First | 2025-05-06 07:17 UTC |
| CISA | 2026-06-02 14:08 UTC |
No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Virtual Patch
Compensating WAF rules to help reduce exposure to this CVE. Rule content and deployable vendor exports are available with KEVIntel Enterprise.
KEVIntel does not currently have a virtual patch for this CVE. When available, KEVIntel virtual patches ship as deployable ModSecurity, Cloudflare, and AWS WAF rules.
Enterprise feature. Virtual patch rule content and deployable vendor exports (ModSecurity, Cloudflare, AWS WAF) are available to KEVIntel Enterprise users.
CVSS Scores
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
Exploited in the wild
Recorded 2025-05-16 08:36:38 UTC · CISA
Proof of concept available
Recorded 2025-03-23 23:30:37 UTC · GitHub
Weaknesses (CWE)
-
Out-of-bounds Write
Recent Mentions
TheHackerNews · May 06, 2025
Google has released its monthly security updates for Android with fixes for 46 security flaws, including one vulnerability that it said has been exploited in the wild. The vulnerability in question is CVE-2025-27363 (CVSS score: 8.1), a high-severity flaw in the System component that could lead to local code execution without requiring any additional execution privileges. "The most severe of
CyberInsider · May 05, 2025
Google’s Android security update for May 2025 patches a zero-day vulnerability in the FreeType font library that is currently being exploited in the wild, alongside dozens of high-severity flaws across the system, framework, and various hardware components. The zero-day, tracked as CVE-2025-27363, resides in the System component and stems from a memory handling bug in … The post Android May 2025 Security Update Fixes Actively Exploited FreeType Zero-Day appeared first on CyberInsider.
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
github · Created 2025-03-23 23:30:37 UTC · 6 stars
Timeline
Key exploitation, disclosure, scanner coverage, and KEV attestation events for this CVE.
-
14:08 UTC about 2 months ago14:08 UTC · about 2 months ago
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
07:17 UTC about 1 year ago07:17 UTC · about 1 year ago
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
23:30 UTC over 1 year ago23:30 UTC · over 1 year ago
Public PoC available
Public proof-of-concept code published
-
13:28 UTC over 1 year ago13:28 UTC · over 1 year ago
CVE published
Vulnerability disclosed publicly
-
19:53 UTC over 1 year ago19:53 UTC · over 1 year ago
CVE ID reserved
Identifier reserved by the CNA
Automate This Intelligence with the Pro API
Confidence scoring, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
Pro API Example
GET /api/v2/pro/kevs/CVE-2025-27363
{
"cve_id": "CVE-2025-27363",
"title": "An out of bounds write exists in FreeType versions 2.13.0 and below (newer ve...",
"affected_vendor": "FreeType",
"affected_product": "FreeType",
"affected_versions": [
{ "vendor": "...", "product": "...", "status": "affected", "display_label": "..." }
],
"confidence": "Confirmed",
"cvss_score": 8.1,
"epss_score": 0.26049,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "...": "Pro API fields" },
"proof_of_concepts": [ "..." ],
"scanner_integrations": [ "..." ]
}