CVE-2021-41617

HIGHNVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3%CVSS: 7.0Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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.

CVSS v3
7.0
EG Score
7.0(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity70% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
3%
EPSS %ILE
84%
KEV
Not listed

Published

September 26, 2021

Last Modified

September 8, 2026

Advisory Details (10)

Auto-updated Jul 14, 2026
Patch available.
generic

oss-security - Announce: OpenSSH 8.8 released

https://www.openwall.com/lists/oss-security/2021/09/26/1
generic
https://www.openssh.com/txt/release-8.8
generic

OpenSSH: Security

https://www.openssh.com/security.html
generic

[SECURITY] [DSA 5586-1] openssh security update

https://www.debian.org/security/2023/dsa-5586
generic

NetApp Product Security

https://security.netapp.com/advisory/ntap-20211014-0004/
generic

[SECURITY] Fedora 35 Update: openssh-8.7p1-2.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET/
generic

[SECURITY] Fedora 33 Update: openssh-8.4p1-8.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT/
generic

[SECURITY] Fedora 34 Update: openssh-8.6p1-5.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED/
generic Patch Available

[SECURITY] [DLA 3694-1] openssh security update

https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html
generic

1190975 – (CVE-2021-41617) VUL-0: CVE-2021-41617: openssh-openssl1,openssh: privilege escalation when AuthorizedKeysCommand/AuthorizedPrincipalsCommand are configured

https://bugzilla.suse.com/show_bug.cgi?id=1190975

Vendor Advisories for CVE-2021-41617(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntussh-askpass-gnome (1:8.9p1-3ubuntu0.6) @ jammy2026-05-22ubuntu
ubuntuopenssh-sftp-server (1:7.2p2-4ubuntu2.10+esm2) @ xenial2026-05-22ubuntu
redhatopenssh-0:8.0p1-13.el82022-05-10redhat
redhatopenssh-0:7.4p1-22.el7_92021-11-23redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(19 across 19 ecosystems)
Alpine:v3.11(1)
PackageVulnerable rangeFixed inDependents
openssh—8.1_p1-r1—
Alpine:v3.12(1)
PackageVulnerable rangeFixed inDependents
openssh—8.3_p1-r3—
Alpine:v3.13(1)
PackageVulnerable rangeFixed inDependents
openssh—8.4_p1-r4—
Alpine:v3.14(1)
PackageVulnerable rangeFixed inDependents
openssh—8.6_p1-r3—
Alpine:v3.15(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.16(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.17(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
openssh—8.8_p1-r0—
Debian:10(1)
PackageVulnerable rangeFixed inDependents
openssh1:7.9p1-10, 1:7.9p1-10+deb10u1, 1:7.9p1-10+deb10u2, 1:7.9p1-10+deb10u31:7.9p1-10+deb10u4—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
openssh1:8.4p1-5, 1:8.4p1-5+deb11u1, 1:8.4p1-5+deb11u21:8.4p1-5+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
openssh—1:8.7p1-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
openssh—1:8.7p1-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
openssh—1:8.7p1-1—

Additional Vendor Advisories

(3)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 7× in last 7d / 31× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 196 total refreshes for this CVE.

  1. 2026-09-07 15:58 UTCEPSS rescore
  2. 2026-09-06 13:45 UTCEPSS rescore
  3. 2026-09-05 15:25 UTCEPSS rescore
  4. 2026-09-04 13:57 UTCEPSS rescore
  5. 2026-09-04 05:03 UTCEPSS rescore
  6. 2026-09-02 14:09 UTCEPSS rescore
  7. 2026-09-01 13:50 UTCEPSS rescore
  8. 2026-09-01 03:33 UTCEPSS rescore
  9. 2026-08-30 19:14 UTCEPSS rescore
  10. 2026-08-30 19:14 UTCEPSS rescore
  11. 2026-08-30 02:13 UTCOSV refresh
  12. 2026-08-30 01:19 UTCEPSS rescore
  13. 2026-08-28 21:37 UTCEPSS rescore
  14. 2026-08-27 14:22 UTCEPSS rescore
  15. 2026-08-26 14:43 UTCEPSS rescore
  16. 2026-08-25 13:46 UTCEPSS rescore
  17. 2026-08-24 14:13 UTCEPSS rescore
  18. 2026-08-23 00:16 UTCEPSS rescore
  19. 2026-08-21 23:46 UTCEPSS rescore
  20. 2026-08-20 22:52 UTCEPSS rescore
  21. 2026-08-20 22:52 UTCEPSS rescore
  22. 2026-08-19 17:01 UTCEPSS rescore
  23. 2026-08-18 13:45 UTCEPSS rescore
  24. 2026-08-17 13:44 UTCEPSS rescore
  25. 2026-08-16 14:53 UTCEPSS rescore
Show 75 more
  1. 2026-08-16 02:11 UTCEPSS rescore
  2. 2026-08-15 01:27 UTCEPSS rescore
  3. 2026-08-13 21:57 UTCEPSS rescore
  4. 2026-08-13 13:21 UTCOSV refresh
  5. 2026-08-12 13:48 UTCEPSS rescore
  6. 2026-08-11 13:38 UTCEPSS rescore
  7. 2026-08-08 16:33 UTCEPSS rescore
  8. 2026-08-07 16:24 UTCEPSS rescore
  9. 2026-08-06 13:44 UTCEPSS rescore
  10. 2026-08-05 19:14 UTCEPSS rescore
  11. 2026-08-04 10:34 UTCEPSS rescore
  12. 2026-08-03 10:33 UTCEPSS rescore
  13. 2026-08-02 02:24 UTCEPSS rescore
  14. 2026-08-01 04:13 UTCEPSS rescore
  15. 2026-07-30 16:25 UTCEPSS rescore
  16. 2026-07-30 01:28 UTCEPSS rescore
  17. 2026-07-28 20:21 UTCOSV refresh
  18. 2026-07-28 15:33 UTCEPSS rescore
  19. 2026-07-26 14:52 UTCEPSS rescore
  20. 2026-07-26 14:52 UTCEPSS rescore
  21. 2026-07-25 14:15 UTCEPSS rescore
  22. 2026-07-24 14:15 UTCEPSS rescore
  23. 2026-07-23 14:16 UTCEPSS rescore
  24. 2026-07-23 02:04 UTCEG score recompute
  25. 2026-07-22 22:51 UTCEG score recompute
  26. 2026-07-22 14:06 UTCEPSS rescore
  27. 2026-07-21 15:22 UTCEPSS rescore
  28. 2026-07-21 15:22 UTCEPSS rescore
  29. 2026-07-20 17:05 UTCEPSS rescore
  30. 2026-07-19 14:29 UTCEPSS rescore
  31. 2026-07-19 02:27 UTCEPSS rescore
  32. 2026-07-18 10:02 UTCEPSS rescore
  33. 2026-07-18 10:02 UTCEPSS rescore
  34. 2026-07-16 17:00 UTCEPSS rescore
  35. 2026-07-16 17:00 UTCEPSS rescore
  36. 2026-07-15 16:55 UTCEPSS rescore
  37. 2026-07-15 16:55 UTCEPSS rescore
  38. 2026-07-15 01:58 UTCEPSS rescore
  39. 2026-07-14 13:19 UTCNVD updateCVSS v3 → 7 · severity → HIGH
  40. 2026-07-14 12:10 UTCMITRE cvelistV5
  41. 2026-07-13 22:27 UTCEPSS rescore
  42. 2026-07-13 22:27 UTCEPSS rescore
  43. 2026-07-13 06:11 UTCEPSS rescore
  44. 2026-07-13 06:11 UTCEPSS rescore
  45. 2026-07-12 05:44 UTCEPSS rescore
  46. 2026-07-11 13:11 UTCOSV refresh
  47. 2026-07-11 08:25 UTCEPSS rescore
  48. 2026-07-11 08:25 UTCEPSS rescore
  49. 2026-07-09 19:07 UTCEPSS rescore
  50. 2026-07-08 15:12 UTCEPSS rescore
  51. 2026-07-07 13:43 UTCEPSS rescore
  52. 2026-07-06 16:25 UTCEPSS rescore
  53. 2026-07-06 16:25 UTCEPSS rescore
  54. 2026-07-06 02:21 UTCEPSS rescore
  55. 2026-07-06 02:21 UTCEPSS rescore
  56. 2026-07-05 02:28 UTCEPSS rescore
  57. 2026-07-05 02:28 UTCEPSS rescore
  58. 2026-07-04 06:29 UTCEPSS rescore
  59. 2026-07-04 06:29 UTCEPSS rescore
  60. 2026-07-02 16:57 UTCEPSS rescore
  61. 2026-07-01 15:04 UTCEPSS rescore
  62. 2026-06-30 23:20 UTCEPSS rescore
  63. 2026-06-30 23:20 UTCEPSS rescore
  64. 2026-06-29 14:04 UTCEPSS rescore
  65. 2026-06-28 14:05 UTCEPSS rescore
  66. 2026-06-28 04:54 UTCEPSS rescore
  67. 2026-06-28 04:54 UTCEPSS rescore
  68. 2026-06-27 03:06 UTCEPSS rescore
  69. 2026-06-27 03:06 UTCEPSS rescore
  70. 2026-06-25 13:48 UTCEPSS rescore
  71. 2026-06-25 13:48 UTCEPSS rescore
  72. 2026-06-24 14:03 UTCEPSS rescore
  73. 2026-06-24 14:03 UTCEPSS rescore
  74. 2026-06-23 21:31 UTCEPSS rescore
  75. 2026-06-23 21:31 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCAdnanApriliyansyahh/CVE-2021-41617
    First seen Sep 2, 2025
    Open source ↗

Frequently asked(5)

What is CVE-2021-41617?
CVE-2021-41617 is a high vulnerability published on September 26, 2021. 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…
When was CVE-2021-41617 disclosed?
CVE-2021-41617 was first published in the National Vulnerability Database on September 26, 2021, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-41617 actively exploited?
CVE-2021-41617 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3% probability of exploitation in the next 30 days, which ranks it in the top 16.0% of all scored CVEs.
What is the CVSS score of CVE-2021-41617?
CVE-2021-41617 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2021-41617?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41617, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-41617

Explore →

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