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NVD / CVE Program· CNA redhat

CVE-2026-2100: P11-kit: null dereference via c_derivekey with specific null parameters

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • 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: 1.3% (FIRST EPSS); higher than 71% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: p11-glue p11-kit 0.26.2.
  • Severity is disputed: the assigning authority (CNA) scores it 5.3, NVD 7.5.

Low priority for now. Upgrade to p11-glue p11-kit 0.26.2 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 p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.

Published
Mar 26, 2026
Updated
Nov 5, 2026
EPSS
1.3% · 71th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · redhat
5.3
2.2 point gap

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

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

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  • 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.

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When you'll hear from us

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  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
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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
p11-kit projectp11-kit
redhatcert-manager operator
redhatcost management metrics operator
redhathardened images
redhatinsights-proxy
redhatupdate infrastructure
redhatenterprise linux

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.

  • p11-glue p11-kit

    • before 0.26.2affected · semver

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.17

    • 1791371080 and laternot affected · rpm
    • 1791371069 and laternot affected · rpm
    • 1791788287 and laternot affected · rpm
    • 1791970484 and laternot affected · rpm

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.18

    • 1791459707 and laternot affected · rpm
    • 1791459711 and laternot affected · rpm
    • 1791459759 and laternot affected · rpm
    • 1789029076 and laternot affected · rpm
    • 1791966259 and laternot affected · rpm

  • Red Hat Cert Manager support for Red Hat OpenShift release 1.20

    • 1790598593 and laternot affected · rpm

  • Red Hat Cost Management 4

    • 1780946239 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • 0:0.26.2-1.el10 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

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 9

    • 0:0.26.2-1.el9 and laternot affected · rpm
    • 0:0.26.2-1.el9 and laternot affected · rpm

  • Red Hat Red Hat Hardened Images

    • 0.26.2-1.1.hum1 and laternot affected · rpm

  • Red Hat Red Hat Insights proxy 1.5

    • 1780420428 and laternot affected · rpm
Affected versions · NVD (13)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • p11-kit project p11-kitbefore 0.26.2
  • redhat cert-manager operator1.17.0 and later · before 1.17.2
  • redhat cert-manager operator1.18.0 and later · before 1.18.2
  • redhat cert-manager operator1.20.0 and later · before 1.20.1
  • redhat cost management metrics operator4.0.0 and later · before 4.4.1
  • redhat enterprise linux10.0
  • redhat enterprise linux6.0
  • redhat enterprise linux7.0
  • redhat enterprise linux8.0
  • redhat enterprise linux9.0
  • redhat hardened imagesall versions
  • redhat insights-proxy1.5.0
  • redhat update infrastructure5.0

Package-level exposure

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

EcosystemPackageAffected rangeFix
AlmaLinux:10p11-kitbefore 0.26.2-1.el100.26.2-1.el10
AlmaLinux:10p11-kit-clientbefore 0.26.2-1.el100.26.2-1.el10
AlmaLinux:10p11-kit-develbefore 0.26.2-1.el100.26.2-1.el10
AlmaLinux:10p11-kit-serverbefore 0.26.2-1.el100.26.2-1.el10
AlmaLinux:10p11-kit-trustbefore 0.26.2-1.el100.26.2-1.el10
AlmaLinux:9p11-kitbefore 0.26.2-1.el90.26.2-1.el9
AlmaLinux:9p11-kit-clientbefore 0.26.2-1.el90.26.2-1.el9
AlmaLinux:9p11-kit-develbefore 0.26.2-1.el90.26.2-1.el9
AlmaLinux:9p11-kit-serverbefore 0.26.2-1.el90.26.2-1.el9
AlmaLinux:9p11-kit-trustbefore 0.26.2-1.el90.26.2-1.el9
Alpine:v3.21p11-kitbefore 0.26.2-r00.26.2-r0
Debian:14p11-kitbefore 0.26.2-20.26.2-2
openSUSE:Tumbleweedp11-kitbefore 0.26.2-1.10.26.2-1.1
Red Hat:enterprise_linux:10.2p11-kitbefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-clientbefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-client-debuginfobefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-debuginfobefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-debugsourcebefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-develbefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-serverbefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-server-debuginfobefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-trustbefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:10.2p11-kit-trust-debuginfobefore 0:0.26.2-1.el100:0.26.2-1.el10
Red Hat:enterprise_linux:9::appstreamp11-kit-client-debuginfobefore 0:0.26.2-1.el90:0.26.2-1.el9

+18

Same product

p11-kit project: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-29363An issue was discovered in p11-kit 0.23.6 through 0.23.21.
    31Monitor
  • CVE-2020-29361An issue was discovered in p11-kit 0.21.1 through 0.23.21.
    31Monitor
  • CVE-2020-29362An issue was discovered in p11-kit 0.21.1 through 0.23.21.
    22Monitor

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
p11-glue p11-kit0.26.2Vendor (CNA)
almalinux:p11-kit0.26.2-1.el10 · AlmaLinux:10Package registry (OSV)
almalinux:p11-kit-client0.26.2-1.el10 · AlmaLinux:10Package registry (OSV)
almalinux:p11-kit-devel0.26.2-1.el10 · AlmaLinux:10Package registry (OSV)
almalinux:p11-kit-server0.26.2-1.el10 · AlmaLinux:10Package registry (OSV)
almalinux:p11-kit-trust0.26.2-1.el10 · AlmaLinux:10Package registry (OSV)
alpine:p11-kit0.26.2-r0 · Alpine:v3.21Package registry (OSV)
debian:p11-kit0.26.2-2 · Debian:14Package registry (OSV)
opensuse:p11-kit0.26.2-1.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:mingw32-p11-kit0:0.26.2-1.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:mingw64-p11-kit0:0.26.2-1.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:p11-kit0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-client0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-client-debuginfo0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-debuginfo0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-debugsource0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-devel0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-server0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-server-debuginfo0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-trust0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
red hat:p11-kit-trust-debuginfo0:0.26.2-1.el10 · Red Hat:enterprise_linux:10.2Package registry (OSV)
rocky linux:p11-kit0:0.26.2-1.el10 · Rocky Linux:10Package 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.

Patch and commit links

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

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Not on record for this CVE: EPSS history · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-824 · Access of Uninitialized Pointer

CVSS vector

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

nvd-primary

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (18 more)

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

All records