CVE-2026-58222

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-30. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search in a trusted context, bypassing normal Access Control List (ACL) enforcement. An authenticated low-privilege domain user can exploit these flaws to disclose confidential Active Directory attributes that would normally be inaccessible. The disclosed information may be leveraged to derive sensitive authentication material, potentially leading to privilege escalation and complete domain compromise. For example: In deployments configured with Group Managed Service Accounts (gMSAs), an attacker can extract the "msKds-RootKeyData" attribute and derive gMSA passwords offline, potentially leading to complete domain compromise if privileged gMSAs are present.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

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
Severity88% × 45%
Exploitation1% × 40%
Automatability30% × 15%
CISA SSVC: Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track or Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 30, 2026

Last Modified

July 30, 2026

Advisory Details (4)

Auto-updated Jul 30, 2026
Patch available. Sources: redhat.
generic

Samba - Security Announcement Archive

https://www.samba.org/samba/security/CVE-2026-58222.html
generic

16148 – (CVE-2026-58222) [SECURITY] CVE-2026-58222: LDAP Compare filter injection and trusted-request confusion disclose protected attributes

https://bugzilla.samba.org/show_bug.cgi?id=16148
redhat

2502722 – (CVE-2026-58222) CVE-2026-58222 samba: Samba AD LDAP Compare filter injection and trusted-request confusion disclose protected attributes

https://bugzilla.redhat.com/show_bug.cgi?id=2502722
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-58222

Vendor Advisories for CVE-2026-58222(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuwinbind (2:4.23.6+dfsg-1ubuntu2.2) @ resolute2026-10-04ubuntu

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 rangeFix by version rangeDependents
samba2:4.13.13+dfsg-1 ... 2:4.24.5+dfsg-1~bpo13+1 (245 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
samba2:4.17.10+dfsg-0+deb12u1 ... 2:4.25.0~rc1+dfsg-1 (178 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
samba2:4.22.10+dfsg-0+deb13u1 ... 2:4.22.8+dfsg-0+deb13u2 (9 versions)
  • every version up to 2:4.22.10+dfsg-0+deb13u2: fixed in 2:4.22.10+dfsg-0+deb13u2
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
samba2:4.22.3+dfsg-4 ... 2:4.24.5+dfsg-1~bpo13+1 (34 versions)
  • every version up to 2:4.24.5+dfsg-1: fixed in 2:4.24.5+dfsg-1
—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 23× in last 7d / 119× 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 317 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-58222?
CVE-2026-58222 is a high vulnerability published on July 30, 2026. A security flaw combining LDAP filter injection and improper authorization checks was found in Samba Active Directory Domain Controller (AD DC). When processing LDAP Compare requests, Samba fails to properly validate user-supplied attribute names and executes the resulting internal database search…
When was CVE-2026-58222 disclosed?
CVE-2026-58222 was first published on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58222 actively exploited?
CVE-2026-58222 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-58222?
CVE-2026-58222 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-58222?
A fix for CVE-2026-58222 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-58222 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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