CVE-2025-32914: Libsoup: oob read on libsoup through function "soup_multipart_new_from_message" in soup-multipart.c leads to crash or exit of process
A flaw was found in libsoup, where the soup_multipart_new_from_message() function is vulnerable to an out-of-bounds read. This flaw allows a malicious HTTP client to induce the libsoup server to read out of bounds.
Security readout for executives and security teams
Plain-English summary
CVE-2025-32914 is an out-of-bounds read in libsoup, an HTTP library. A malicious HTTP client can trigger affected server-side use of multipart message parsing, potentially causing process crash or unintended memory reads. Treat this as urgent for exposed services using affected Red Hat libsoup packages.
Executive priority
High priority for exposed Red Hat systems and products embedding libsoup. The business risk is service disruption and possible confidentiality impact, but evidence provided does not show active exploitation. Patch through vendor channels and focus first on internet-reachable workloads.
Technical view
The flaw is CWE-125 in soup_multipart_new_from_message() in soup-multipart.c. Red Hat rates it high with CVSS 7.4: network attack vector, high attack complexity, no privileges or user interaction, unchanged scope, high confidentiality and availability impact, and no integrity impact.
Likely exposure
Most likely exposure is Linux services or applications using affected libsoup or libsoup3 packages to parse HTTP multipart messages from untrusted clients. The source bundle identifies affected Red Hat Enterprise Linux 7 ELS, 8 streams, 9 streams, and 10 packages.
Exploitation context
The bundle says a malicious HTTP client can induce an out-of-bounds read. It does not cite CISA KEV listing, active exploitation, public exploit code, or confirmed in-the-wild abuse. Attack complexity is marked high.
Researcher notes
Evidence is strongest for Red Hat-packaged libsoup versions and the upstream GNOME issue reference. The CVE describes an out-of-bounds read, not remote code execution. RHEL 6 status is listed as unknown in the bundle, so do not assume exposure without vendor confirmation.
Mitigation direction
Apply applicable Red Hat security errata for affected RHEL streams.
Check GNOME/libsoup and distribution advisories for upstream or non-Red Hat fixes.
Prioritize internet-facing services that parse multipart HTTP input with libsoup.
Restart affected services after package updates if required by vendor guidance.
If patch timing is constrained, reduce untrusted client reachability where operationally feasible.
Validation and detection
Inventory installed libsoup and libsoup3 package versions across Linux hosts.
Map exposed services that use libsoup for HTTP server or multipart parsing behavior.
Compare package builds against the affected Red Hat versions in the CVE record.
Confirm remediation by verifying vendor-fixed package versions after updates.
Review logs for unexplained crashes in services handling multipart HTTP requests.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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
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cwe · low confidence lookup
CWE-125: Exact CWE lookup
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CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-125 · source CWE mapping
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.