Security readout for executives and security teams
Plain-English summary
CVE-2025-32908 is a denial-of-service flaw in libsoup's HTTP/2 server handling. A remote, unauthenticated user may be able to make a vulnerable service unavailable by sending invalid HTTP/2 pseudo-header values. The documented impact is availability loss, not data theft or code execution.
Executive priority
Treat this as a high-priority availability risk for exposed services, especially on RHEL 10. It does not indicate data compromise, but downtime could affect customer-facing or operational systems. Patch affected packages through vendor channels and validate where libsoup server functionality is actually used.
Technical view
libsoup's HTTP/2 server may not fully validate the :scheme, :authority, and :path pseudo-headers. The CVSS 3.1 score is 7.5, with network attack vector, low complexity, no privileges, no user interaction, and high availability impact only.
Likely exposure
Exposure is most likely where libsoup is used as an HTTP/2 server and is reachable over a network. The bundle identifies Red Hat Enterprise Linux 10 libsoup3 version 0:3.6.5-3.el10_0 as affected, RHEL 7-9 as unaffected, and RHEL 6 as unknown.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The issue appears remotely reachable and unauthenticated based on the CVSS vector, but the source bundle does not provide exploit details or evidence of exploitation in the wild.
Researcher notes
Evidence is strongest for the affected Red Hat package and the pseudo-header validation flaw. The bundle references GNOME issue and merge request but does not include fixed version details. Avoid assuming client-only libsoup usage is exploitable without confirming HTTP/2 server exposure.
Mitigation direction
- Apply the Red Hat advisory update for affected RHEL 10 libsoup3 systems.
- Check GNOME libsoup and distribution guidance for fixed upstream or backported packages.
- Prioritize services using libsoup as an HTTP/2 server and exposed to untrusted networks.
- Restrict network access to affected HTTP/2 services where patching is delayed.
- Monitor service availability for crashes or repeated abnormal HTTP/2 requests.
Validation and detection
- Inventory systems with libsoup or libsoup3 installed.
- Identify applications using libsoup HTTP/2 server functionality.
- Confirm whether installed RHEL 10 libsoup3 matches 0:3.6.5-3.el10_0.
- Verify RHEL 7-9 systems are not carrying unsupported vulnerable backports.
- Record RHEL 6 status as unknown until vendor guidance confirms exposure.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-115: Exact CWE lookup
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Open ATT&CK lookupCVE-2025-32908 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6redhatVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- Source timelineredhat
Made public.
- Source timelineredhat
Reported to Red Hat.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2025:7505CVE reference, redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2025-32908CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2359343CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/429CVE reference, redhat
- https://gitlab.gnome.org/GNOME/libsoup/-/merge_requests/451CVE reference, redhat
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Misinterpretation of Input
Misinterpretation of Input represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.