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NVD / CVE Program· CNA suse

CVE-2022-21951: Rancher: Weave CNI password is not set if RKE template is used with CNI value overridden

MediumCVSS 6.8 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 27/100)

  • 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: 0.39% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: github.com/rancher/rancher (Go) 2.5.14, 2.6.5.

Low priority for now. Upgrade to github.com/rancher/rancher (Go) 2.5.14, 2.6.5 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 Cleartext Transmission of Sensitive Information vulnerability in SUSE Rancher, Rancher allows attackers on the network to read and change network data due to missing encryption of data transmitted via the network when a cluster is created from an RKE template with the CNI value overridden This issue affects: SUSE Rancher Rancher versions prior to 2.5.14; Rancher versions prior to 2.6.5.

Published
May 25, 2022
Updated
Jun 17, 2026
EPSS
0.3% · 34th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
27 / 40 · 6.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CNA vs NVD score

NVD
6.8
CNA · suse
6.8
agree

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.

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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
suserancher

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This vulnerability is about certificate validation or weak cryptography. The free SSL checker tests your certificate, enabled TLS versions and weak ciphers.

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Versions reported by the vendor

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

  • SUSE Rancher

    • Rancher and later · before 2.5.14affected
    • Rancher and later · before 2.6.5affected

Affected versions

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

  • suse rancher2.5.0 and later · before 2.5.14
  • suse rancher2.6.0 and later · before 2.6.5

Package-level exposure

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

EcosystemPackageAffected rangeFix
Gogithub.com/rancher/rancherfrom 2.5.0 · before 2.5.142.5.14
Gogithub.com/rancher/rancherfrom 2.6.0 · before 2.6.52.6.5

Same product

suse: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-22649Rancher 'Audit Log' leaks sensitive information
    40Plan
  • CVE-2022-43755Rancher: Non-random authentication token
    40Plan
  • CVE-2021-36782Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2021-36784May 2, 2022 · Privilege escalation for users with create/update permissions in Global Roles
    28Monitor
  • ← EarlierCVE-2021-4200May 2, 2022 · Write access to the Catalog for any user when restricted-admin role is enabled
    21Monitor
  • Later →CVE-2021-36783Sep 7, 2022 · Rancher: Failure to properly sanitize credentials in cluster template answers
    39Monitor

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
Go:github.com/rancher/rancher2.5.14Package registry (OSV)
Go:github.com/rancher/rancher2.6.5Package 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.

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

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.
  • Special conditions such as timing or configuration are required.

If successful

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

Weakness class (CWE)

CWE-319 · Cleartext Transmission of Sensitive Information

CVSS vector

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

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.

References

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

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