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CVE Record

CVE-2025-32050: Libsoup: integer overflow in append_param_quoted

A flaw was found in libsoup. The libsoup append_param_quoted() function may contain an overflow bug resulting in a buffer under-read.

MediumCVSS 5.9Not KEV-listedUpdated
Glexia's Takemoderate

Analyst readout for executives and security teams

Plain-English summary

CVE-2025-32050 is a libsoup memory-safety flaw that can cause availability impact. A crafted condition in HTTP parameter quoting can trigger an integer overflow leading to a buffer under-read. Red Hat rates it medium; the practical concern is service or application disruption where affected packages are installed.

Executive priority

Handle through normal vulnerability remediation with attention to systems where downtime matters. There is no source-supported evidence of active exploitation, but affected supported Red Hat releases have vendor advisories, making routine patch governance appropriate.

Technical view

The issue is in libsoup append_param_quoted(). The CVE describes an integer overflow that may result in a buffer under-read, mapped to CWE-127. CVSS 3.1 is 5.9 with network attack vector, high attack complexity, no privileges, no user interaction, and high availability impact only.

Likely exposure

Most likely exposure is Red Hat Enterprise Linux 8, 8.8 EUS, 9, 9.2 EUS, and 9.4 EUS systems carrying affected libsoup packages. The bundle also lists affected Red Hat mingw-freetype and spice-client-win packages. RHEL 10 libsoup3 is listed unaffected; RHEL 6 and 7 status is unknown.

Exploitation context

The source bundle does not show CISA KEV listing or any cited active exploitation. CVSS indicates remote reachability without authentication, but high attack complexity. Treat this as a reliability and availability risk rather than a confirmed data-theft issue based on available evidence.

Researcher notes

Evidence is strongest for Red Hat package exposure and the CVSS shape. The bundle does not provide exploit details, proof of active exploitation, or a universal upstream fixed version. Validate per distribution advisory and avoid extrapolating impact beyond affected package contexts.

Mitigation direction

  • Apply the relevant Red Hat security advisory updates for affected RHEL versions.
  • Check vendor guidance for Debian or other distributions before assuming equivalent fixes.
  • Prioritize internet-facing or high-availability systems using libsoup-dependent applications.
  • Track RHEL 6 and 7 status separately because the bundle lists them as unknown.

Validation and detection

  • Inventory installed libsoup, mingw-freetype, and spice-client-win package versions on Red Hat systems.
  • Map each system to the affected RHEL major or EUS release listed in the CVE data.
  • Confirm applied errata against RHSA-2025:4440, 4508, 4560, 4568, 7436, or 8292.
  • Review application dependency manifests for bundled or statically linked libsoup copies.
Prepared
Confidence
medium
Sources
12

Based on public source material and reviewed before publication.

Potential ATT&CK relevance

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 · low confidence lookup

CWE-127: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2025-32050 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.9 (3.1)
Known Exploited
No
Published

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

Official CVE source material

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.

1CVSS vectors
5Timeline events
2ADP providers
11Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.9CVSS 3.1MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H2.23.6redhat

Vulnerability scoring details

Base CVSS 3.1 score

5.9Medium
CVSS 3.1 vector shape for CVE-2025-32050Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Made public.

  2. Source timelineredhat

    Reported to Red Hat.

  3. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Unknown vendorlibsouplibsoup, 0unaffected
Red HatRed Hat Enterprise Linux 8libsoup, 0:2.62.3-8.el8_10affected
Red HatRed Hat Enterprise Linux 8mingw-freetype, 0:2.8-3.el8_10.1affected
Red HatRed Hat Enterprise Linux 8spice-client-win, 0:8.10-1affected
Red HatRed Hat Enterprise Linux 8libsoup, 0:2.62.3-8.el8_10affected
Red HatRed Hat Enterprise Linux 8.8 Extended Update Supportlibsoup, 0:2.62.3-3.el8_8.4affected
Red HatRed Hat Enterprise Linux 9libsoup, 0:2.72.0-10.el9_6.1affected
Red HatRed Hat Enterprise Linux 9.2 Extended Update Supportlibsoup, 0:2.72.0-8.el9_2.4affected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Supportlibsoup, 0:2.72.0-8.el9_4.4affected
Red HatRed Hat Enterprise Linux 10libsoup3unaffected
Red HatRed Hat Enterprise Linux 6libsoupunknown
Red HatRed Hat Enterprise Linux 7libsoupunknown
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-127 · source CWE mapping

Buffer Under-read

Buffer Under-read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.