CVE-2023-2837Public exploit

Process crash via recursive XML entity expansion

Published May 22, 2023 · Updated Jan 21, 2025

Stack exhaustion in GPAC before 2.2.2 allows local users to crash MP4Box by opening a crafted XML-based media file. The XML SAX parser recursively expands nested entity values without a depth limit, repeatedly re-entering xml_sax_parse until the process stack is exhausted. Exploitation requires MP4Box to process the crafted file and interrupts only that application process.

CVSS severity5.5
Medium
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack exhaustion in GPAC before 2.2.2 allows local users to crash MP4Box by opening a crafted XML-based media file. The XML SAX parser recursively expands nested entity values without a depth limit, repeatedly re-entering xml_sax_parse until the process stack is exhausted. Exploitation requires MP4Box to process the crafted file and interrupts only that application process.

The record

CVE
CVE-2023-2837
Published
May 22, 2023
Updated
Jan 21, 2025
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-121, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 21, 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=unspecified <2.2.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

GPAC Project · GPACversion=unspecified <2.2.2

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
5.5huntr.devCVSS:3.0/AV:L/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1203Exploitation for Client Execution

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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