CVE-2026-58222

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-51158 (ENISA EUVD) · GHSA-fcqv-6jgj-4xxc (GitHub Security Advisories)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • 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
40
EG Risk 40/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-30). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 30, 2026

Last Modified

July 30, 2026

Advisory Details (4)

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

Samba - Security Announcement Archive

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

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
Red Hat

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
Red HatMentions a patch (unverified)

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) @ resolute2026-10-24ubuntu

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 9× in last 7d / 56× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 365 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 265 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-31 11:48 UTCEG score recompute
  4. 2026-10-31 11:48 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  9. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  10. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  11. 2026-10-25 14:16 UTCEG score recompute
  12. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  13. 2026-10-24 00:28 UTCEG score recompute
  14. 2026-10-24 00:28 UTCVendor advisory
  15. 2026-10-24 00:28 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  16. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  17. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  19. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  21. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-10-18 03:28 UTCEG score recompute
  23. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-10-16 13:07 UTCEG score recompute
Show 75 more
  1. 2026-10-16 13:07 UTCVendor advisory
  2. 2026-10-16 13:07 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  3. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-10-12 15:53 UTCEG score recompute
  8. 2026-10-11 19:36 UTCEG score recompute
  9. 2026-10-11 16:52 UTCEG score recompute
  10. 2026-10-11 14:14 UTCEG score recompute
  11. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-10-06 23:53 UTCEG score recompute
  17. 2026-10-06 23:53 UTCVendor advisory
  18. 2026-10-06 23:53 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  19. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  20. 2026-10-05 20:00 UTCEG score recompute
  21. 2026-10-05 20:00 UTCVendor advisory
  22. 2026-10-05 20:00 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-10-04 23:57 UTCEG score recompute
  25. 2026-10-04 23:57 UTCVendor advisory
  26. 2026-10-04 23:57 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  27. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  28. 2026-10-04 06:38 UTCEG score recompute
  29. 2026-10-04 06:38 UTCVendor advisory
  30. 2026-10-04 06:38 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  31. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  32. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  33. 2026-10-02 16:58 UTCEG score recompute
  34. 2026-10-02 16:58 UTCVendor advisory
  35. 2026-10-02 16:58 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  36. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  37. 2026-10-01 14:31 UTCVendor advisory
  38. 2026-10-01 14:31 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  39. 2026-10-01 02:54 UTCEG score recompute
  40. 2026-10-01 02:54 UTCVendor advisory
  41. 2026-10-01 02:54 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  42. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  43. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  44. 2026-09-29 06:54 UTCEG score recompute
  45. 2026-09-29 06:54 UTCVendor advisory
  46. 2026-09-29 06:53 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  47. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  48. 2026-09-28 06:37 UTCVendor advisory
  49. 2026-09-28 06:37 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  50. 2026-09-27 19:01 UTCEG score recompute
  51. 2026-09-27 19:01 UTCVendor advisory
  52. 2026-09-27 19:01 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  53. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  54. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  55. 2026-09-25 04:57 UTCEG score recompute
  56. 2026-09-25 04:57 UTCVendor advisory
  57. 2026-09-25 04:57 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  58. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  59. 2026-09-24 09:06 UTCVendor advisory
  60. 2026-09-24 09:06 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  61. 2026-09-23 21:30 UTCEG score recompute
  62. 2026-09-23 21:30 UTCVendor advisory
  63. 2026-09-23 21:30 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  64. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  65. 2026-09-23 02:51 UTCVendor advisory
  66. 2026-09-23 02:51 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  67. 2026-09-22 15:14 UTCEG score recompute
  68. 2026-09-22 15:14 UTCVendor advisory
  69. 2026-09-22 15:13 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  70. 2026-09-20 21:17 UTCEG score recompute
  71. 2026-09-20 21:17 UTCVendor advisory
  72. 2026-09-20 21:17 UTCGHSA enrichmentGHSA-fcqv-6jgj-4xxc · GitHub severity HIGH · GitHub CVSS 8.8
  73. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  74. 2026-09-19 23:47 UTCEG score recompute
  75. 2026-09-19 23:47 UTCVendor advisory

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

Frequently asked(5)

What is CVE-2026-58222?
CVE-2026-58222 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-58222 was made public on July 28, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on July 30, 2026. EchelonGraph's copy of the record carries a last-modified date of July 30, 2026; the record at its source may have been updated since.
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 (56th 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.

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