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TI-2021-09321 Aliases CVE-2021-28041GHSA-gp5m-rxrx-pfrj

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few…

Priority LOW 37CWE-415Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-415 and the CVSS impact.

Summary

ssh-agent in OpenSSH before 8.5 has a double free that may be relevant in a few less-common scenarios, such as unconstrained agent-socket access on a legacy operating system, or the forwarding of an agent to an attacker-controlled host.

Why it matters now

EPSS 0.03513 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*8.2 to before 8.5VulnerableOpenBSD
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
cpe:2.3:o:netapp:hci_storage_node_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableNetApp
cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*not specified by NVDRunning onNetApp
  • cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:* Versions 8.2 to before 8.5 Vulnerable ·OpenBSD
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
  • cpe:2.3:o:netapp:hci_storage_node_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*12.0.0.3.0VulnerableOracle
cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:*8.8VulnerableOracle
  • cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:* Versions 12.0.0.3.0 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:zfs_storage_appliance:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Oracle

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28041
  2. 2026-10-03 Alias added: GHSA-gp5m-rxrx-pfrj

References

Patch 2

Advisory 7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences