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NVD / CVE Program· CNA redhat

CVE-2026-12505: Cifs-utils: local privilege escalation via forged cifs.spnego key description in cifs.upcall

HighCVSS 7.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: azl3 cifs-utils 7.3-1 on Azure Linux 3.0 7.6-1.

Low priority for now. Upgrade to azl3 cifs-utils 7.3-1 on Azure Linux 3.0 7.6-1 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 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.

Published
Jun 18, 2026
Updated
Nov 4, 2026
EPSS
0.1% · 4th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.8
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
  • No public exploit code on record
  • A fix has been released

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

Follow CVE-2026-12505

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • 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.

VendorProduct
enterprise linux10.2
enterprise linux8
enterprise linux9
openshift4.22
enterprise linux6
enterprise linux7

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

    • 0:7.6-1.el10_2 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • 0:7.0-5.el8_10 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:7.6-2.el9_8 and laternot affected · rpm
    • 0:7.6-2.el9_8 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsaffected

  • Red Hat Red Hat OpenShift Container Platform 4.22

    • 4.22.9.8.202607220526-0 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 5

    • all versionsaffected

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:8cifs-utilsbefore 7.0-5.el8_107.0-5.el8_10
AlmaLinux:8cifs-utils-develbefore 7.0-5.el8_107.0-5.el8_10
AlmaLinux:8pam_cifscredsbefore 7.0-5.el8_107.0-5.el8_10
AlmaLinux:9cifs-utilsbefore 7.6-2.el9_87.6-2.el9_8
AlmaLinux:9cifs-utils-develbefore 7.6-2.el9_87.6-2.el9_8
AlmaLinux:9pam_cifscredsbefore 7.6-2.el9_87.6-2.el9_8
Debian:12cifs-utilsfrom 0—
Debian:13cifs-utilsbefore 2:7.4-1+deb13u12:7.4-1+deb13u1
Debian:14cifs-utilsbefore 2:7.8-12:7.8-1
Red Hat:enterprise_linux:10.2cifs-utilsbefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:10.2cifs-utils-debuginfobefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:10.2cifs-utils-debugsourcebefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:10.2cifs-utils-develbefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:10.2pam_cifscredsbefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:10.2pam_cifscreds-debuginfobefore 0:7.6-1.el10_20:7.6-1.el10_2
Red Hat:enterprise_linux:8::baseoscifs-utilsbefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:8::baseoscifs-utils-debuginfobefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:8::baseoscifs-utils-debugsourcebefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:8::baseospam_cifscredsbefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:8::baseospam_cifscreds-debuginfobefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:8::crbcifs-utils-develbefore 0:7.0-5.el8_100:7.0-5.el8_10
Red Hat:enterprise_linux:9::appstreamcifs-utils-debuginfobefore 0:7.6-2.el9_80:7.6-2.el9_8
Red Hat:enterprise_linux:9::appstreamcifs-utils-debugsourcebefore 0:7.6-2.el9_80:7.6-2.el9_8
Red Hat:enterprise_linux:9::appstreampam_cifscredsbefore 0:7.6-2.el9_80:7.6-2.el9_8

+9

Same product

red hat: all records

Other highest-scoring records for the same primary product.

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  • 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-2026-42014Jun 16, 2026 · Gnutls: gnutls: use-after-free in gnutls_pkcs11_token_set_pin
    26Monitor
  • ← EarlierCVE-2026-10649Jun 16, 2026 · Pacemaker: pacemaker: denial of service via integer overflow in remote message decompression
    34Monitor
  • Later →CVE-2026-3195Jun 19, 2026 · Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)
    29Monitor

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
azl3 cifs-utils 7.3-1 on Azure Linux 3.07.6-1 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:cifs-utils7.0-5.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:cifs-utils-devel7.0-5.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:pam_cifscreds7.0-5.el8_10 · AlmaLinux:8Package registry (OSV)
debian:cifs-utils2:7.4-1+deb13u1 · Debian:13Package registry (OSV)
debian:cifs-utils2:7.8-1 · Debian:14Package registry (OSV)
red hat:cifs-utils0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:cifs-utils-debuginfo0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:cifs-utils-debugsource0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:cifs-utils-devel0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:pam_cifscreds0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:pam_cifscreds-debuginfo0:7.6-1.el10_2 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:cifs-utils0:7.6-1.el10_2 · Rocky Linux:10Package registry (OSV)
suse:cifs-utils7.0-slfo.1.1_4.1 · SUSE:Linux Micro 6.1Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

Variant candidates

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

  • CVE-2025-6019364 days apartLibblockdev: lpe from allow_active to root in libblockdev via udisks
    28Monitor

Chain candidates

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

  • CVE-2026-1447619 days apartSssd: sssd: gpo cache path traversal via unsanitized gpcfilesyspath allows kerberos authentication bypass
    32Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system 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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-250 · Execution with Unnecessary Privileges

CVSS vector

CVSS:3.1/AV:L/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

—

References

Show all references (7 more)

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

All records