Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2025-27363

FreeType

FreeType · 0.0.0 to <= 2.13.0

Watch CVE-2025-27363 Browse KEV feed
Severity
CVSS 8.1 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
27.8%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-27363 is an unauthenticated vulnerability affecting FreeType. 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...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

FreeType 0.0.0 to <= 2.13.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

FreeType

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.

FreeType Affected
FreeType
Through 2.13.0
Published
11 Mar 2025
Exploitation Reported
16 May 2025
Attack vector
Remote
Complexity
High
Privileges
None
User interaction
None

Tags

cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 16 May 2025

A trusted third party reported exploitation.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CyberInsider First 2025-05-06 07:17 UTC
CISA 2026-06-02 14:08 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Scanner coverage

No scanner integrations recorded yet.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

No detection artifacts or sensor request patterns are available for this CVE yet.

Check back as sensor telemetry and scanner integrations are updated.

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.1 High

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

27.8%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Out-of-bounds Write CWE-787

Recent mention · The Hacker News

Google Fixes Actively Exploited Android System Flaw in May 2025 Security Update

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...

Read full advisory

All Mentions

Recent mention · The Hacker News

Google Fixes Actively Exploited Android System Flaw in May 2025 Security Update

The Hacker News · 06 May 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

Recent mention · CyberInsider

Android May 2025 Security Update Fixes Actively Exploited FreeType Zero-Day

CyberInsider · 05 May 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.

Timeline

From disclosure to observed exploitation

  1. 14:08 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  2. 07:17 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  3. 13:28 UTC

    CVE published

    Vulnerability disclosed publicly

  4. 19:53 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-27363

Sample API response 
{
  "cve_id": "CVE-2025-27363",
  "confidence": "Confirmed",
  "cvss_score": 8.1,
  "cvss_estimated": false,
  "epss_score": 0.27775,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}