Red Hat Enterprise Linux up to 10 libsoup out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$5k-$25k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Red Hat Enterprise Linux 6/7/8/9/10. This affects an unknown function of the component libsoup. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2025-11021. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in Red Hat Enterprise Linux 6/7/8/9/10. This affects some unknown functionality of the component libsoup. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality. The summary by CVE is:

A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.

It is possible to read the advisory at access.redhat.com. This vulnerability is uniquely identified as CVE-2025-11021 since 09/26/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 01/12/2026).

The vulnerability scanner Nessus provides a plugin with the ID 266122 (Linux Distros Unpatched Vulnerability : CVE-2025-11021), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (266122), EUVD (EUVD-2025-31225) and CERT Bund (WID-SEC-2025-2311). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (redhat): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 266122
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-11021

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/26/2025 Advisory disclosed
09/26/2025 +0 days CVE reserved
09/26/2025 +0 days VulDB entry created
01/12/2026 +108 days VulDB entry last update

Sourcesinfo

Vendor: redhat.com

Advisory: access.redhat.com
Status: Confirmed

CVE: CVE-2025-11021 (🔒)
GCVE (CVE): GCVE-0-2025-11021
GCVE (VulDB): GCVE-100-325971
EUVD: 🔒
CERT Bund: WID-SEC-2025-2311 - Red Hat Enterprise Linux (libsoup3): Schwachstelle ermöglicht Offenlegung von Informationen

Entryinfo

Created: 09/26/2025 10:45
Updated: 01/12/2026 13:43
Changes: 09/26/2025 10:45 (63), 09/26/2025 19:39 (1), 10/03/2025 04:04 (2), 11/05/2025 16:37 (7), 01/12/2026 13:43 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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