CVE-2022-35047Public exploitNetwork attack vector

Process crash via malformed font parsing

Published Oct 14, 2022 · Updated May 15, 2025

Heap-based buffer overflow in OTFCC otfccdump 0.10.4 and earlier allows attackers to crash the process via a crafted font file. The otfccdump OpenType parser writes beyond a heap buffer while processing malformed font data at the published 0x6b05aa build offset. A user must cause otfccdump to parse the file; published scoring limits the demonstrated consequence to a process crash, with no confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap-based buffer overflow in OTFCC otfccdump 0.10.4 and earlier allows attackers to crash the process via a crafted font file. The otfccdump OpenType parser writes beyond a heap buffer while processing malformed font data at the published 0x6b05aa build offset. A user must cause otfccdump to parse the file; published scoring limits the demonstrated consequence to a process crash, with no confidentiality or integrity impact.

The record

CVE
CVE-2022-35047
Published
Oct 14, 2022
Updated
May 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1499.004, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2022CVE publishedPublication date reported by the CVE source.
  2. May 15, 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

6.5UbuntuCVSS: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
T1499.004Endpoint Denial of Service: Application or System Exploitation
T1204.002User Execution: Malicious 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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