CVE-2022-35464Public exploitNetwork attack vector

Crash via malformed font heap-buffer overflow

Published Aug 16, 2022 · Updated Aug 3, 2024

Heap-buffer overflow in OTFCC otfccdump 0.10.4 allows remote attackers to crash the utility via a crafted OpenType font. The published report identifies only the faulting otfccdump executable offset, 0x6171b2, and does not disclose the parser routine or unchecked operation that overruns the heap allocation. Exploitation requires otfccdump to process an attacker-supplied font and is bounded to a crash in the published assessment, with no reported data disclosure or modification.

CVSS severity6.5
Medium
EPSS probability0.78%
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 otfccdump 0.10.4 allows remote attackers to crash the utility via a crafted OpenType font. The published report identifies only the faulting otfccdump executable offset, 0x6171b2, and does not disclose the parser routine or unchecked operation that overruns the heap allocation. Exploitation requires otfccdump to process an attacker-supplied font and is bounded to a crash in the published assessment, with no reported data disclosure or modification.

The record

CVE
CVE-2022-35464
Published
Aug 16, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 16, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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

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 exploitPublished

Weakness, pattern, technique

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

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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