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SRC: CVELISTV5 / SYNC: T-12M / LAG: 16M / REC: 386,409 / REV: C6-1C / V4

01 RecordSTATE: PUBLISHED

CVE-2025-4948

Libsoup: integer underflow in soup_multipart_new_from_message() leading to denial of service in libsoup

HighPUBLISHEDCNA: redhat

CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

CNA: redhat

Libsoup: integer underflow in soup_multipart_new_from_message() leading to denial of service in libsoup

03 Exploitation and scoring

SRC: CISA, FIRST, NVD, RED HAT

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.78% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 53.2% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-06-30.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

SCHEMA: 5.2

Published

2025-05-19 15:55Z1 YR AGO

Last updated

2026-06-30 14:27Z2 MO AGO

Reserved

2025-05-19

Assigning CNA

redhat

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

CWE-191Integer Underflow (Wrap or Wraparound)Base

Data version

5.2

Document digest

06c39ef940d46bb08d6bcc308fff5dc598a460397dd8c6ea0f44be5ccc5c4dc2

05 Affected products

PAIRS: 14

VendorProductVersionsPlatforms

Red HatRed Hat Enterprise Linux 10Not specified—

Red HatRed Hat Enterprise Linux 7 Extended Lifecycle SupportNot specified—

Red HatRed Hat Enterprise Linux 8Not specified—

Red HatRed Hat Enterprise Linux 8.2 Advanced Update SupportNot specified—

Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportNot specified—

Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportNot specified—

Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update ServiceNot specified—

Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsNot specified—

Red HatRed Hat Enterprise Linux 8.8 Extended Update SupportNot specified—

Red HatRed Hat Enterprise Linux 9Not specified—

Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP SolutionsNot specified—

Red HatRed Hat Enterprise Linux 9.2 Extended Update SupportNot specified—

Red HatRed Hat Enterprise Linux 9.4 Extended Update SupportNot specified—

Red HatRed Hat Enterprise Linux 6Not specified—

06 References

REFS: 16

access.redhat.comRHSA-2025:21657https://access.redhat.com/errata/RHSA-2025:21657vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8126https://access.redhat.com/errata/RHSA-2025:8126vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8128https://access.redhat.com/errata/RHSA-2025:8128vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8132https://access.redhat.com/errata/RHSA-2025:8132vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8139https://access.redhat.com/errata/RHSA-2025:8139vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8140https://access.redhat.com/errata/RHSA-2025:8140vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8252https://access.redhat.com/errata/RHSA-2025:8252vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8480https://access.redhat.com/errata/RHSA-2025:8480vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8481https://access.redhat.com/errata/RHSA-2025:8481vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8482https://access.redhat.com/errata/RHSA-2025:8482vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:8663https://access.redhat.com/errata/RHSA-2025:8663vendor-advisoryx_refsource_REDHAT
access.redhat.comRHSA-2025:9179https://access.redhat.com/errata/RHSA-2025:9179vendor-advisoryx_refsource_REDHAT
access.redhat.comhttps://access.redhat.com/security/cve/CVE-2025-4948vdb-entryx_refsource_REDHAT
bugzilla.redhat.comRHBZ#2367183https://bugzilla.redhat.com/show_bug.cgi?id=2367183issue-trackingx_refsource_REDHAT
gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/libsoup/-/issues/449
gitlab.gnome.orghttps://gitlab.gnome.org/GNOME/libsoup/-/work_items/449exploit