CVE-2026-12505

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM 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
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 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(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

June 18, 2026

Last Modified

July 15, 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(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntucifs-utils (2:6.14-1ubuntu0.6) @ jammy2026-07-16ubuntu
ubuntucifs-utils (2:7.4-1ubuntu0.26.04.1) @ resolute2026-07-16ubuntu
redhatcifs-utils-0:7.0-5.el8_102026-07-15redhat
redhatcifs-utils-0:7.6-2.el9_82026-07-15redhat
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

(5)

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 14× in last 7d / 104× 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 134 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

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 July 15, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 94.7% of all scored CVEs.
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.

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