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NVD / CVE Program· CNA redhat

CVE-2026-58222: Samba: samba ad ldap compare filter injection and trusted-request confusion disclose protected attributes

Noroxi assessment

Priority: Monitor (action score 35/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.80% (FIRST EPSS); higher than 56.9% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: samba (Debian:13) 2:4.22.10+dfsg-0+deb13u2; samba (Debian:14) 2:4.24.5+dfsg-1; samba (openSUSE:Leap 16.0) 4.22.11+git.552.66cfeb7de0a-160000.1.1, 4.22.9+git.538.af6cb4fb2e-160000.1.1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to samba (Debian:13) 2:4.22.10+dfsg-0+deb13u2; samba (Debian:14) 2:4.24.5+dfsg-1; samba (openSUSE:Leap 16.0) 4.22.11+git.552.66cfeb7de0a-160000.1.1, 4.22.9+git.538.af6cb4fb2e-160000.1.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.8 · v3.1—Proof of concept Fix available
Published
Jul 30, 2026
Updated
Jul 30, 2026
EPSS
0.8% · 56th percentile

Report tools

JSON

Action score

35

Monitor

Low priority for now.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
8.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-58222

When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • all versionsunknown

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsunknown

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12sambafrom 0—
Debian:13sambabefore 2:4.22.10+dfsg-0+deb13u22:4.22.10+dfsg-0+deb13u2
Debian:14sambabefore 2:4.24.5+dfsg-12:4.24.5+dfsg-1
openSUSE:Leap 16.0sambabefore 4.22.11+git.552.66cfeb7de0a-160000.1.14.22.11+git.552.66cfeb7de0a-160000.1.1
openSUSE:Leap 16.0sambabefore 4.22.9+git.538.af6cb4fb2e-160000.1.14.22.9+git.538.af6cb4fb2e-160000.1.1
openSUSE:Tumbleweedsambabefore 4.24.5+git.481.dba78dbdea-1.14.24.5+git.481.dba78dbdea-1.1
SUSE:Enterprise Storage 7.1sambabefore 4.15.13+git.808.eeca19f5e1-150300.3.106.14.15.13+git.808.eeca19f5e1-150300.3.106.1
SUSE:Linux Enterprise High Availability Extension 12 SP5sambabefore 4.15.13+git.729.a8ce057e8d-3.109.14.15.13+git.729.a8ce057e8d-3.109.1
SUSE:Linux Enterprise High Availability Extension 15 SP6sambabefore 4.19.8+git.501.67274891bc-150600.3.29.14.19.8+git.501.67274891bc-150600.3.29.1
SUSE:Linux Enterprise Micro 5.3sambabefore 4.15.13+git.808.eeca19f5e1-150400.3.52.14.15.13+git.808.eeca19f5e1-150400.3.52.1
SUSE:Linux Enterprise Micro 5.5sambabefore 4.17.12+git.581.f49579c6cd-150500.3.42.14.17.12+git.581.f49579c6cd-150500.3.42.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7sambabefore 4.21.10+git.533.31d7e5508d-150700.3.29.14.21.10+git.533.31d7e5508d-150700.3.29.1
SUSE:Linux Micro 6.2sambabefore 4.22.9+git.538.af6cb4fb2e-160000.1.14.22.9+git.538.af6cb4fb2e-160000.1.1
SUSE:Linux Micro 6.2sambabefore 4.22.11+git.552.66cfeb7de0a-160000.1.14.22.11+git.552.66cfeb7de0a-160000.1.1

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-10230Samba: command injection in wins server hook script
    52Plan
  • CVE-2026-4631Cockpit: cockpit: unauthenticated remote code execution due to ssh command-line argument injection
    44Plan
  • CVE-2026-76578Ipa: freeipa: freeipa: unauthenticated ldap client can obtain administrator credentials via the self-managed-token aci
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-58218Jul 30, 2026 · Samba: dns signing dos via tkey name cache exhaustion
    21Monitor
  • ← EarlierCVE-2026-58216Jul 30, 2026 · Samba: kpasswd service: kpasswd packet that contains malformed asn.1 might cause the server to access 6 bytes of unallocated memory leading server to crash
    21Monitor
  • Later →CVE-2026-68562Jul 30, 2026 · Ansible-collection-redhat-leapp: ansible-collection-redhat-leapp: information disclosure via leapp report tampering
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:samba2:4.22.10+dfsg-0+deb13u2 · Debian:13Package registry (OSV)
opensuse:samba4.24.5+git.481.dba78dbdea-1.1 · openSUSE:TumbleweedPackage registry (OSV)
suse:samba4.22.9+git.538.af6cb4fb2e-160000.1.1 · SUSE:Linux Micro 6.2Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02026-10-13

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+74 d
  3. TodayNov 11, 2026+104 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-90 · Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Exploit maturitynone → poc
  2. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (3 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records