CVE-2022-27405Public exploitNetwork attack vector

Application crash via sign-changing face index cast

Published Apr 22, 2022 · Updated Jul 9, 2026

Out-of-bounds read in FreeType before 2.12.0 allows context-dependent attackers to crash applications through a crafted face index. ft_open_face_internal casts the FT_Long face_index argument to FT_Int without first constraining it, allowing the cast to change its sign before the driver processes the value. Reachability requires a consuming application to pass an attacker-influenced, out-of-range face index; the demonstrated consequence is a segmentation fault and application crash.

CVSS severity7.5
High
EPSS probability2.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in FreeType before 2.12.0 allows context-dependent attackers to crash applications through a crafted face index. ft_open_face_internal casts the FT_Long face_index argument to FT_Int without first constraining it, allowing the cast to change its sign before the driver processes the value. Reachability requires a consuming application to pass an attacker-influenced, out-of-range face index; the demonstrated consequence is a segmentation fault and application crash.

The record

CVE
CVE-2022-27405
Published
Apr 22, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-824, CWE-125, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 22, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1Red HatCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-824Access of Uninitialized Pointer
CWE-125Out-of-bounds Read
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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