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Δ / VULNERABILITY RECORD

CVE-2026-4878.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 6.7No severity score in this snapshot.
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSMicrosoft vendor recordModified Sep 24, 2026

Disclosure summary

Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

Source-reported weakness categories

CWE-367

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

Microsoft Security Updates (CVRF) · 2026-Apr

Open original source · Updated Sep 24, 2026

Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.

Microsoft maximum product score: 6.7

VendorProduct / associationVersion / bounds
Microsoft update guidecbl2 libcap 2.60-7 on CBL-Mariner 2.0 (MSRC status code 3)
Microsoft update guidecbl2 libcap 2.60-7 on CBL Mariner 2.0 (MSRC status code 3)
Microsoft update guideazl3 libcap 2.69-13 on Azure Linux 3.0 (MSRC status code 3)
Microsoft update guideazl3 libcap 2.69-14 on Azure Linux 3.0 (MSRC status code 3)

Vendor remediation references

  • Release Notes · build 2.60-8 · product IDs 21190-21692
  • Vendor guidance · product IDs 21190-21692
  • CBL-Mariner Releases · build 2.60-8 · product IDs 21190-17086
  • Vendor guidance · product IDs 21190-17086
  • CBL-Mariner Releases · build 2.69-14 · product IDs 21191-17084, 21214-17084
  • Vendor guidance · product IDs 21191-17084, 21214-17084

Original records & references

PUBLISHED 2026-04-10T21:10:27-04:00
MODIFIED 2026-09-24T22:40:20-04:00
INGESTED 2026-10-08T12:45:03-04:00