CVE-2022-35023Network attack vector

Crash via malformed OpenType font processing

Published Sep 22, 2022 · Updated May 27, 2025

Out-of-bounds write in OTFCC commit 617837b allows attackers to crash otfccdump by processing a crafted OpenType font file. The public record exposes only a libc crash offset and does not identify the OTFCC function or malformed font field that triggers the invalid write. Exploitation requires a user or application to process the file, and the demonstrated consequence is termination of the parsing process.

CVSS severity6.5
Medium
EPSS probability0.77%
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 write in OTFCC commit 617837b allows attackers to crash otfccdump by processing a crafted OpenType font file. The public record exposes only a libc crash offset and does not identify the OTFCC function or malformed font field that triggers the invalid write. Exploitation requires a user or application to process the file, and the demonstrated consequence is termination of the parsing process.

The record

CVE
CVE-2022-35023
Published
Sep 22, 2022
Updated
May 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 22, 2022CVE publishedPublication date reported by the CVE source.
  2. May 27, 2025Record 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

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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