CVE-2026-12505

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-18. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

A flaw was found in the cifs-utils package where the cifs.upcall helper fails to securely drop its root privileges before looking up user information inside a user-controlled environment. A local, low privileged attacker can exploit this by using a crafted request_key payload to trick the root-owned helper into entering a custom environment (namespace) containing a malicious NSS module. This forces the system to load the attacker's controlled NSS Module and configuration, allowing them to execute arbitrary commands as the root user, elevating their privileges and fully compromising the system.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
2.2%
KEV
Not listed

Published

June 18, 2026

Last Modified

June 30, 2026

Advisory Details (3)

Auto-updated Jun 18, 2026
Patch available. Sources: redhat.
generic

git.samba.org - cifs-utils.git/commit

https://git.samba.org/?p=cifs-utils.git;a=commit;h=972c5b5ff95e3e812bc8daa72d0383654ab0dba7
redhat

2489805 – (CVE-2026-12505) CVE-2026-12505 cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall

https://bugzilla.redhat.com/show_bug.cgi?id=2489805
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12505

Vendor Advisories for CVE-2026-12505(2)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntucifs-utils (2:7.4-1ubuntu0.26.04.1) @ resolute2026-07-07ubuntu
redhatcifs-utils-0:7.6-1.el10_22026-06-29redhat

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.

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 43× in last 7d / 106× 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 106 total refreshes for this CVE.

  1. 2026-07-07 00:17 UTCEG score recompute
  2. 2026-07-07 00:17 UTCVendor advisory
  3. 2026-07-07 00:17 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 11:47 UTCEG score recompute
  6. 2026-07-06 11:47 UTCVendor advisory
  7. 2026-07-06 11:47 UTCGHSA enrichment
  8. 2026-07-05 22:47 UTCEG score recompute
  9. 2026-07-05 22:47 UTCVendor advisory
  10. 2026-07-05 22:46 UTCGHSA enrichment
  11. 2026-07-05 10:16 UTCEG score recompute
  12. 2026-07-05 10:16 UTCVendor advisory
  13. 2026-07-05 10:15 UTCGHSA enrichment
  14. 2026-07-04 21:45 UTCEG score recompute
  15. 2026-07-04 21:45 UTCVendor advisory
  16. 2026-07-04 21:45 UTCGHSA enrichment
  17. 2026-07-04 09:14 UTCEG score recompute
  18. 2026-07-04 09:14 UTCVendor advisory
  19. 2026-07-04 09:14 UTCGHSA enrichment
  20. 2026-07-03 20:44 UTCEG score recompute
  21. 2026-07-03 20:44 UTCVendor advisory
  22. 2026-07-03 20:44 UTCGHSA enrichment
  23. 2026-07-03 08:15 UTCEG score recompute
  24. 2026-07-03 08:15 UTCVendor advisory
  25. 2026-07-03 08:14 UTCGHSA enrichment
Show 75 more
  1. 2026-07-02 19:45 UTCEG score recompute
  2. 2026-07-02 19:45 UTCVendor advisory
  3. 2026-07-02 19:44 UTCGHSA enrichment
  4. 2026-07-02 07:15 UTCEG score recompute
  5. 2026-07-02 07:15 UTCVendor advisory
  6. 2026-07-02 07:15 UTCGHSA enrichment
  7. 2026-07-01 18:46 UTCEG score recompute
  8. 2026-07-01 18:46 UTCVendor advisory
  9. 2026-07-01 18:46 UTCGHSA enrichment
  10. 2026-07-01 15:06 UTCEPSS rescore
  11. 2026-07-01 15:06 UTCEPSS rescore
  12. 2026-07-01 06:16 UTCEG score recompute
  13. 2026-07-01 06:16 UTCVendor advisory
  14. 2026-07-01 06:16 UTCGHSA enrichment
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 17:46 UTCEG score recompute
  17. 2026-06-30 17:46 UTCVendor advisory
  18. 2026-06-30 17:46 UTCGHSA enrichment
  19. 2026-06-30 05:16 UTCEG score recompute
  20. 2026-06-30 05:16 UTCVendor advisory
  21. 2026-06-30 05:16 UTCGHSA enrichment
  22. 2026-06-29 16:45 UTCEG score recompute
  23. 2026-06-29 16:45 UTCGHSA enrichment
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 04:15 UTCEG score recompute
  26. 2026-06-29 04:14 UTCGHSA enrichment
  27. 2026-06-28 15:44 UTCEG score recompute
  28. 2026-06-28 15:44 UTCGHSA enrichment
  29. 2026-06-28 14:07 UTCEPSS rescore
  30. 2026-06-28 04:56 UTCEPSS rescore
  31. 2026-06-28 04:56 UTCEPSS rescore
  32. 2026-06-28 03:13 UTCEG score recompute
  33. 2026-06-28 03:13 UTCGHSA enrichment
  34. 2026-06-27 14:43 UTCEG score recompute
  35. 2026-06-27 14:43 UTCGHSA enrichment
  36. 2026-06-27 03:08 UTCEPSS rescore
  37. 2026-06-27 02:13 UTCEG score recompute
  38. 2026-06-27 02:12 UTCGHSA enrichment
  39. 2026-06-26 13:42 UTCEG score recompute
  40. 2026-06-26 13:42 UTCGHSA enrichment
  41. 2026-06-26 01:12 UTCEG score recompute
  42. 2026-06-26 01:12 UTCGHSA enrichment
  43. 2026-06-25 13:49 UTCEPSS rescore
  44. 2026-06-25 12:39 UTCEG score recompute
  45. 2026-06-25 12:38 UTCGHSA enrichment
  46. 2026-06-25 00:09 UTCEG score recompute
  47. 2026-06-25 00:09 UTCGHSA enrichment
  48. 2026-06-24 14:05 UTCEPSS rescore
  49. 2026-06-24 11:36 UTCEG score recompute
  50. 2026-06-24 11:36 UTCGHSA enrichment
  51. 2026-06-23 23:07 UTCEG score recompute
  52. 2026-06-23 23:06 UTCGHSA enrichment
  53. 2026-06-23 21:32 UTCEPSS rescore
  54. 2026-06-23 10:36 UTCEG score recompute
  55. 2026-06-23 10:36 UTCGHSA enrichment
  56. 2026-06-22 22:04 UTCEG score recompute
  57. 2026-06-22 22:04 UTCGHSA enrichment
  58. 2026-06-22 14:25 UTCEPSS rescore
  59. 2026-06-22 14:25 UTCEPSS rescore
  60. 2026-06-22 09:33 UTCEG score recompute
  61. 2026-06-22 09:32 UTCGHSA enrichment
  62. 2026-06-21 21:01 UTCEG score recompute
  63. 2026-06-21 21:01 UTCGHSA enrichment
  64. 2026-06-21 08:29 UTCEG score recompute
  65. 2026-06-21 08:28 UTCGHSA enrichment
  66. 2026-06-21 01:59 UTCEPSS rescore
  67. 2026-06-21 01:59 UTCEPSS rescore
  68. 2026-06-20 19:57 UTCEG score recompute
  69. 2026-06-20 19:56 UTCGHSA enrichment
  70. 2026-06-20 07:25 UTCEG score recompute
  71. 2026-06-20 07:25 UTCGHSA enrichment
  72. 2026-06-19 19:25 UTCEPSS rescore
  73. 2026-06-19 18:53 UTCEG score recompute
  74. 2026-06-19 18:53 UTCGHSA enrichment
  75. 2026-06-19 06:23 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-12505?
CVE-2026-12505 is a high vulnerability published on June 18, 2026. A flaw was found in the cifs-utils package where the cifs.upcall helper fails to securely drop its root privileges before looking up user information inside a user-controlled environment. A local, low privileged attacker can exploit this by using a crafted request_key payload to trick the…
When was CVE-2026-12505 disclosed?
CVE-2026-12505 was first published in the National Vulnerability Database on June 18, 2026, 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-2026-12505 actively exploited?
CVE-2026-12505 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12505?
CVE-2026-12505 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-12505?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12505, 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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