01 Record

CVE-2024-50602

An issue was discovered in libexpat before 2.6.4. There is a crash within the XML_ResumeParser function because XML_StopParser can stop/suspend an unstarted parser.

MediumPUBLISHEDCNA: mitre

CNA base score5.9 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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02 Description

An issue was discovered in libexpat before 2.6.4. There is a crash within the XML_ResumeParser function because XML_StopParser can stop/suspend an unstarted parser.

03 Exploitation and scoring

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.11% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 65.9% of scored records. A rank, not a probability.

NVD base score

5.9 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-15.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2024-10-27 00:00Z2 YR AGO

Last updated

2026-10-15 00:58Z14 DAYS AGO

Reserved

2024-10-27

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-754Improper Check for Unusual or Exceptional ConditionsClass

Data version

5.2

Document digest

f71187228403330969cda1c3df83a5cbc382e1458fe089231a26df7cfc3ddcee

05 Affected products

VendorProductVersionsPlatforms

libexpat_projectlibexpat0 to < 2.6.4—

06 References

github.comhttps://github.com/libexpat/libexpat/pull/915
security.netapp.comhttps://security.netapp.com/advisory/ntap-20250404-0008/
lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/04/msg00040.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-355557.html
cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-202008.html

07 Fixed in

AlmaLinux 8

expat
Fixed in 2.2.5-16.el8_10
expat-devel
Fixed in 2.2.5-16.el8_10

AlmaLinux 9

expat
Fixed in 2.5.0-3.el9_5.1
expat-devel
Fixed in 2.5.0-3.el9_5.1

CloudLinux 8

expat
Fixed in 2.2.5-16.el8_10
expat-devel
Fixed in 2.2.5-16.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

CloudLinux 9

expat
Fixed in 2.5.0-3.el9_5.1
expat-devel
Fixed in 2.5.0-3.el9_5.1

Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.

Debian 12

expat
Fixed in 2.5.0-1+deb12u2
libxmltok
No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

expat
Fixed in 2.6.3-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

expat
Fixed in 2.6.3-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.