CVE-2025-12748 (GCVE-0-2025-12748)

Vulnerability from cvelistv5 – Published: 2025-11-11 19:49 – Updated: 2026-06-29 23:29
VLAI
Title
Libvirt: denial of service in xml parsing
Summary
A flaw was discovered in libvirt in the XML file processing. More specifically, the parsing of user provided XML files was performed before the ACL checks. A malicious user with limited permissions could exploit this flaw by submitting a specially crafted XML file, causing libvirt to allocate too much memory on the host. The excessive memory consumption could lead to a libvirt process crash on the host, resulting in a denial-of-service condition.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 14:40 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1045 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:18326 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18748 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-12748 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2413801 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Affected: 0 , ≤ 11.9.0 (semver)
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:11.10.0-12.el10_2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:11.10.0-12.el9_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
Create a notification for this product.
Date Public
2025-11-07 00:00
Credits
Red Hat would like to thank Artem Mukhin and Святослав Терешин for reporting this issue.
Show details on NVD website
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              "url": "https://access.redhat.com/errata/RHSA-2026:18326"
            },
            {
              "name": "RHSA-2026:18748",
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              "url": "https://access.redhat.com/errata/RHSA-2026:18748"
            },
            {
              "tags": [
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              ],
              "url": "https://access.redhat.com/security/cve/CVE-2025-12748"
            },
            {
              "name": "RHBZ#2413801",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2413801"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2025-11-10T15:19:36.251Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2025-11-07T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Libvirt: denial of service in xml parsing",
          "workarounds": [
            {
              "lang": "en",
              "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-770: Allocation of Resources Without Limits or Throttling"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2025-12748",
        "datePublished": "2025-11-11T19:49:32.255Z",
        "dateReserved": "2025-11-05T14:52:13.619Z",
        "dateUpdated": "2026-06-29T23:29:05.055Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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