CVE-2022-35035Network attack vector

Crash via crafted font heap overflow

Published Sep 22, 2022 · Updated May 27, 2025

Heap buffer overflow in OTFCC commit 617837b allows remote attackers to crash otfccdump by supplying a crafted OpenType font file. The public disclosure identifies the fault only at release-x64/otfccdump offset 0x6b559f and does not name the parser function or invalid write. Exploitation requires a user to process the attacker-supplied font; the documented consequence is a process crash without disclosed data access or code execution.

CVSS severity6.5
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in OTFCC commit 617837b allows remote attackers to crash otfccdump by supplying a crafted OpenType font file. The public disclosure identifies the fault only at release-x64/otfccdump offset 0x6b559f and does not name the parser function or invalid write. Exploitation requires a user to process the attacker-supplied font; the documented consequence is a process crash without disclosed data access or code execution.

The record

CVE
CVE-2022-35035
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

6.5CISA-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.

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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 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.

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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