CVE-2022-35070Network attack vector

Crash via malformed OpenType font parsing

Published Sep 19, 2022 · Updated Aug 3, 2024

Heap buffer overflow in OTFCC commit 617837b allows attackers to crash otfccdump by processing a crafted OpenType font. The disclosure locates the failure only at otfccdump offset 0x65fc97 and does not identify the faulty parser function or bounds operation. Execution requires a user or workflow to pass the file to the command-line utility; Debian reports no security impact where the affected code is not built.

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 commit 617837b allows attackers to crash otfccdump by processing a crafted OpenType font. The disclosure locates the failure only at otfccdump offset 0x65fc97 and does not identify the faulty parser function or bounds operation. Execution requires a user or workflow to pass the file to the command-line utility; Debian reports no security impact where the affected code is not built.

The record

CVE
CVE-2022-35070
Published
Sep 19, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 19, 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

6.5NVDCVSS: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

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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