CVE-2022-35067Public exploitNetwork attack vector

Process crash via otfccdump heap-buffer overflow

Published Sep 19, 2022 · Updated May 29, 2025

Heap-buffer overflow in OTFCC otfccdump at commit 617837b allows remote attackers to crash the process with a crafted OpenType font. The public record identifies the failure at binary offset otfccdump+0x6e41b0 but does not disclose the parser function or unchecked operation responsible for the write past heap bounds. Exploitation requires a user to process the malicious font, and the published impact is limited to interruption of that process.

CVSS severity6.5
Medium
EPSS probability0.92%
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 at commit 617837b allows remote attackers to crash the process with a crafted OpenType font. The public record identifies the failure at binary offset otfccdump+0x6e41b0 but does not disclose the parser function or unchecked operation responsible for the write past heap bounds. Exploitation requires a user to process the malicious font, and the published impact is limited to interruption of that process.

The record

CVE
CVE-2022-35067
Published
Sep 19, 2022
Updated
May 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-787, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 2022CVE publishedPublication date reported by the CVE source.
  2. May 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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 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
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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