ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2021-41617

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initializ…

Published Sep 26, 2021 · catalog updated Oct 14, 2026 · the affected product

Check if you run it

No confirmed exploitation is on record for CVE-2021-41617. EPSS is 2.54%. Act only if a listed version of the affected product is installed.

Gaps on this record

  • No plain product name is stored. The page cannot tell you which product to check.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
2.54%
Remediation
Advisory link
Affected products
cpe fedoraproject/fedora · cpe netapp/active iq unified manager · cpe netapp/aff 500f firmware · cpe netapp/aff a250 firmware · cpe netapp/clustered data ontap · cpe netapp/hci management node

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/fedora33
  • cpe fedoraproject/fedora34
  • cpe fedoraproject/fedora35
  • cpe netapp/active iq unified managerversion unspecified
  • cpe netapp/aff 500f firmwareversion unspecified
  • cpe netapp/aff a250 firmwareversion unspecified
  • cpe netapp/clustered data ontapversion unspecified
  • cpe netapp/hci management nodeversion unspecified
  • cpe netapp/ontap select deploy administration utilityversion unspecified
  • cpe openbsd/opensshversion unspecified
  • cpe oracle/http server12.2.1.2.0
  • cpe starwindsoftware/starwind virtual sanv8r13

How to fix CVE-2021-41617

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2021-41617. EPSS is 2.54%. Act only if a listed version of the affected product is installed.

Which versions are affected?

Compare what you have installed with oracle/http server 12.2.1.2.0; starwindsoftware/starwind virtual san v8r13. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 2.54%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 26, 2021 · NIST NVD

    Detected

    sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a differen

  2. Oct 14, 2026 · NIST NVD

    Updated

    sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a differen

Sources

  • CISA Cybersecurity AdvisoriesGovernment advisoryCVE-2021-41617

    View CSAF Summary Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.7 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fixes and recommends specific mitigations for products

    cisa.gov
  • CISA ICS AdvisoriesGovernment advisoryCVE-2021-41617

    View CSAF Summary Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.7 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant). Siemens is preparing fixes and recommends specific mitigations for products

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-41617

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-41617

    30-day exploitation probability 2.54%

    first.org
  • NIST NVDVulnerability recordCVE-2021-41617

    sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 24, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

CVE-2021-41617: sshd in OpenSSH 6.2 through 8.x before 8.8, when ce… · ZeroDay Findings