CVE-2023-44488Network attack vector

Encoding-process crash via stale frame-size buffers

Published Sep 30, 2023 · Updated Sep 23, 2024

Denial of service in libvpx before 1.13.1 allows remote attackers to crash an encoding process through crafted VP9 frame dimensions. During encoder reconfiguration, vp9_change_config clears retained buffers using the new frame dimensions without first resizing them when width shrinks but total frame size grows. Exploitation requires attacker-controlled dimensions to reach a consuming application's VP9 encoding path; the documented consequence is a crash, not data access or modification.

CVSS severity7.5
High
EPSS probability1.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in libvpx before 1.13.1 allows remote attackers to crash an encoding process through crafted VP9 frame dimensions. During encoder reconfiguration, vp9_change_config clears retained buffers using the new frame dimensions without first resizing them when width shrinks but total frame size grows. Exploitation requires attacker-controlled dimensions to reach a consuming application's VP9 encoding path; the documented consequence is a crash, not data access or modification.

The record

CVE
CVE-2023-44488
Published
Sep 30, 2023
Updated
Sep 23, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-755, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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

7.5National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-755Improper Handling of Exceptional Conditions
T1499.004Application or System Exploitation

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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