CVE-2023-37328Network attack vector

Code execution via unchecked PGS subtitle length

Published May 3, 2024 · Updated Nov 4, 2025

Heap-based buffer overflow in GStreamer before 1.20.7 or 1.22.4 allows remote attackers to execute code through a crafted PGS subtitle. The PGS Blu-ray subtitle decoder copies a user-controlled data length into a heap buffer without validating that the allocation is large enough. Exploitation requires an application to process the malicious subtitle; the overwrite can crash that application or execute code in its process.

CVSS severity8.8
High
EPSS probability2.05%
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 GStreamer before 1.20.7 or 1.22.4 allows remote attackers to execute code through a crafted PGS subtitle. The PGS Blu-ray subtitle decoder copies a user-controlled data length into a heap buffer without validating that the allocation is large enough. Exploitation requires an application to process the malicious subtitle; the overwrite can crash that application or execute code in its process.

The record

CVE
CVE-2023-37328
Published
May 3, 2024
Updated
Nov 4, 2025
Vendor
GStreamer Project
Product
GStreamer
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.10.x
  2. Affected versionversion=1.22 and latest commit 6dff93acf69c40271a769aa2fa35efbcc2aeb9b4
  3. Affected versionversion=1.x <1.20.7
  4. Affected versionversion=1.x <1.22.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GStreamer Project · GStreamerversion=0.10.x; version=1.22 and latest commit 6dff93acf69c40271a769aa2fa35efbcc2aeb9b4; version=1.x <1.20.7; version=1.x <1.22.4

Published CVSS scores

8.8UbuntuCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/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 exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

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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