CVE-2025-12748

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2025-11-11. a secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

November 11, 2025

Last Modified

June 30, 2026

Advisory Details (4)

Auto-updated Jun 25, 2026
Patch available. Sources: redhat.
redhat Patch Available

2413801 – (CVE-2025-12748) CVE-2025-12748 libvirt: Denial of service in XML parsing

Affected: Red Hat Enterprise Linux 10

https://bugzilla.redhat.com/show_bug.cgi?id=2413801
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2025-12748
redhat Patch Available

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2026:18748
redhat Patch Available

Affected: Red Hat Enterprise Linux 10.

https://access.redhat.com/errata/RHSA-2026:18326

Vendor Advisories for CVE-2025-12748(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibvirt0 (11.0.0-2ubuntu6.5) @ plucky2026-05-21ubuntu
redhatlibvirt-0:11.10.0-12.el10_22026-05-19redhat
redhatlibvirt-0:11.10.0-12.el9_82026-05-19redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
libvirt10.0.0-1 ... 9.9.0-1 (93 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
libvirt10.0.0-1 ... 9.9.0-1 (69 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
libvirt11.3.0-3, 11.3.0-3+deb13u111.3.0-3+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
libvirt11.3.0-3 ... 11.9.0-2 (9 versions)11.10.0-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 163 total refreshes for this CVE.

  1. 2026-09-04 13:59 UTCEPSS rescore
  2. 2026-09-04 05:05 UTCEPSS rescore
  3. 2026-09-02 14:10 UTCEPSS rescore
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  9. 2026-08-28 13:23 UTCOSV refresh
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  24. 2026-08-12 13:49 UTCEPSS rescore
  25. 2026-08-12 02:09 UTCOSV refresh
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  1. 2026-08-11 13:41 UTCEPSS rescore
  2. 2026-08-10 23:59 UTCEPSS rescore
  3. 2026-08-09 13:45 UTCEPSS rescore
  4. 2026-08-07 16:26 UTCEPSS rescore
  5. 2026-08-06 13:45 UTCEPSS rescore
  6. 2026-08-05 19:16 UTCEPSS rescore
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  8. 2026-08-04 10:37 UTCEPSS rescore
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  14. 2026-07-28 15:35 UTCEPSS rescore
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  16. 2026-07-27 07:39 UTCOSV refresh
  17. 2026-07-26 14:53 UTCEPSS rescore
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  19. 2026-07-24 14:16 UTCEPSS rescore
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  21. 2026-07-23 02:48 UTCEG score recompute
  22. 2026-07-22 14:07 UTCEPSS rescore
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  24. 2026-07-21 15:24 UTCEPSS rescore
  25. 2026-07-19 14:30 UTCEPSS rescore
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  27. 2026-07-19 02:28 UTCEPSS rescore
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  30. 2026-07-16 17:02 UTCEPSS rescore
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  32. 2026-07-15 16:57 UTCEPSS rescore
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  36. 2026-07-13 22:29 UTCEPSS rescore
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  38. 2026-07-13 06:12 UTCEPSS rescore
  39. 2026-07-12 05:46 UTCEPSS rescore
  40. 2026-07-12 05:45 UTCEPSS rescore
  41. 2026-07-10 01:47 UTCOSV refresh
  42. 2026-07-09 19:09 UTCEPSS rescore
  43. 2026-07-08 15:14 UTCEPSS rescore
  44. 2026-07-07 13:45 UTCEPSS rescore
  45. 2026-07-06 16:26 UTCEPSS rescore
  46. 2026-07-06 02:22 UTCEPSS rescore
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  48. 2026-07-05 02:30 UTCEPSS rescore
  49. 2026-07-04 06:30 UTCEPSS rescore
  50. 2026-07-01 15:06 UTCEPSS rescore
  51. 2026-06-30 23:21 UTCEPSS rescore
  52. 2026-06-29 14:06 UTCEPSS rescore
  53. 2026-06-28 14:07 UTCEPSS rescore
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  55. 2026-06-28 04:55 UTCEPSS rescore
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  58. 2026-06-25 13:49 UTCEPSS rescore
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  74. 2026-06-16 17:52 UTCEPSS rescore
  75. 2026-06-15 17:48 UTCEPSS rescore

Frequently asked(5)

What is CVE-2025-12748?
CVE-2025-12748 is a medium vulnerability published on November 11, 2025. 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…
When was CVE-2025-12748 disclosed?
CVE-2025-12748 was first published in the National Vulnerability Database on November 11, 2025, with the most recent update on June 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-12748 actively exploited?
CVE-2025-12748 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.0% of all scored CVEs.
What is the CVSS score of CVE-2025-12748?
CVE-2025-12748 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2025-12748?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-12748, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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