CVE-2023-37327Network attack vector

Code execution via FLAC image-tag integer overflow

Published May 3, 2024 · Updated Nov 4, 2025

Heap-based buffer overflow in GStreamer 1.22.1 allows remote attackers to execute code by supplying a malformed FLAC file. The FLAC parser insufficiently validates image-tag data, allowing an integer overflow before buffer allocation and a subsequent heap overwrite. Exploitation requires an application to process the crafted media and runs code in that process; heap corruption can instead crash it.

CVSS severity7.6
High
EPSS probability1.71%
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 1.22.1 allows remote attackers to execute code by supplying a malformed FLAC file. The FLAC parser insufficiently validates image-tag data, allowing an integer overflow before buffer allocation and a subsequent heap overwrite. Exploitation requires an application to process the crafted media and runs code in that process; heap corruption can instead crash it.

The record

CVE
CVE-2023-37327
Published
May 3, 2024
Updated
Nov 4, 2025
Vendor
GStreamer Project
Product
GStreamer
Classifications
CWE-190, 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=1.22.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GStreamer Project · GStreamerversion=1.22.1

Published CVSS scores

7.6Zero Day InitiativeCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/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-190Integer Overflow or Wraparound
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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