Out-of-bounds read in libsoup - CVE-2025-11021

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Main Vulnerability Database Vulnerabilities #VU117708

Out-of-bounds read in libsoup - CVE-2025-11021

Published: October 28, 2025


Vulnerability identifier: #VU117708
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-11021
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when parsing cookies with specially crafted expiration dates. A remote attacker can trick the victim into visiting a specially crafted website, trigger an out-of-bounds read error and read contents of memory on the system.


Affected software

libsoup
SUSE Manager Server 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Proxy 4.3
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Manager Proxy
SUSE Manager Server
SUSE Manager Retail Branch Server
Anolis OS
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Basesystem Module
openSUSE Leap
Oracle Solaris
Netezza Appliance
IBM Observability with Instana
IBM Power Hardware Management Console (HMC)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
libsoup-devel
libsoup
libsoup (Red Hat package)
libsoup-doc
libsoup-3_0-0-32bit-debuginfo
libsoup-3_0-0
libsoup-3_0-0-debuginfo
libsoup-debugsource
typelib-1_0-Soup-3_0
libsoup-lang
libsoup-3_0-0-32bit
libsoup-devel-32bit
libsoup-3_0-0-64bit-debuginfo
libsoup-3_0-0-64bit
libsoup-devel-64bit
libsoup3 (Red Hat package)
libsoup3-doc
libsoup3-devel
libsoup3

How to mitigate CVE-2025-11021

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Netezza Appliance - update to 1.0.1.0 fp278500
IBM Observability with Instana - update to 1.0.309
IBM Power Hardware Management Console (HMC) - addressed in versions 10.3.1063.1, 11.1.1111.4
libsoup-devel - addressed in versions 2.62.2-9, 2.62.3-10.0.1, 2.74.3-19
libsoup - addressed in versions 2.62.2-9, 2.62.3-10.0.1, 2.74.3-19
libsoup (Red Hat package) - addressed in versions 2.62.2-9.el7_9, 2.62.3-1.el8_2.6, 2.62.3-2.el8_4.6, 2.62.3-2.el8_6.6, 2.62.3-3.el8_8.6, 2.62.3-10.el8_10, 2.72.0-8.el9_0.6, 2.72.0-8.el9_2.6, 2.72.0-8.el9_4.6, 2.72.0-12.el9_7.1
libsoup-doc - addressed in versions 2.62.3-10.0.1, 2.74.3-19
libsoup-3_0-0-32bit-debuginfo - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-devel - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-3_0-0 - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-3_0-0-debuginfo - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-debugsource - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
typelib-1_0-Soup-3_0 - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-lang - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-3_0-0-32bit - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-devel-32bit - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-3_0-0-64bit-debuginfo - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-3_0-0-64bit - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup-devel-64bit - addressed in versions 3.0.4-150400.3.18.1, 3.4.4-150600.3.18.1
libsoup3 (Red Hat package) - addressed in versions 3.6.5-3.el10_0.7, 3.6.5-3.el10_1.6
libsoup3-doc - update to 3.6.5-5
libsoup3-devel - update to 3.6.5-5
libsoup3 - update to 3.6.5-5
Oracle Solaris - addressed in versions 11.3 ESU 36.35, 11.4 SRU 89

External References

Related Security Bulletins