Vulnerability-Lookup

GHSA-QWRW-P888-CC55

Vulnerability from github – Published: 2025-11-11 21:30 – Updated: 2026-05-19 18:32

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-12748"
  ],
  "database_specific": {
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    "github_reviewed_at": null,
    "nvd_published_at": "2025-11-11T20:15:34Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-qwrw-p888-cc55",
  "modified": "2026-05-19T18:32:01Z",
  "published": "2025-11-11T21:30:28Z",
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    },
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      "url": "https://access.redhat.com/errata/RHSA-2026:18326"
    },
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}

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

Vulnerability from cvelistv5 – Published: 2025-11-11 19:49 – Updated: 2026-06-29 23:29

Title

Libvirt: denial of service in xml parsing

Summary

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

4 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

6 products

Vendor	Product	Version
		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
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
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8

Date Public

2025-11-07 00:00

Credits

Red Hat would like to thank Artem Mukhin and Святослав Терешин for reporting this issue.

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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