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CVE-2025-4948

Libsoup: integer underflow in soup_multipart_new_from_message() leading to denial of service in libsoup

Published: May 19, 2025Updated: Nov 18, 2025 Sources: CVE List NVD BDUCWE-191
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.6%
Top 54.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A flaw was found in the soup_multipart_new_from_message() function of the libsoup HTTP library, which is commonly used by GNOME and other applications to handle web communications. The issue occurs when the library processes specially crafted multipart messages. Due to improper validation, an internal calculation can go wrong, leading to an integer underflow. This can cause the program to access invalid memory and crash. As a result, any application or server using libsoup could be forced to exit unexpectedly, creating a denial-of-service (DoS) risk.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-191

Affected Products

Red Hat Enterprise LinuxRed Hat Inc.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
libsoupGNOME Foundation
Mixed
OSS Libraries / generic-library
red hat inc.commercialUSOperating Systemsaka red hat
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «ред софт»commercialRUOperating Systemsaka red soft
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
gnome foundationoss-projectUSOSS Librariesaka libsoup, gnu image manipulation program (gimp), gvfs
and 15 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://nvd.nist.gov/vuln/detail/CVE-2025-4948
nvd.nist.gov
https://access.redhat.com/security/cve/cve-2025-4948
access.redhat.com
https://security-tracker.debian.org/tracker/CVE-2025-4948
security-tracker.debian.org
and 19 more references View all →

Timeline

Published
May 19, 2025
Last Updated
Nov 18, 2025

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