01 Record

CVE-2021-28041

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

UnratedPUBLISHEDCNA: mitre

CNA base scoreUnratedNo CNA CVSS vector

View raw JSON

02 Description

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

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 3.42% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 87.9% of scored records. A rank, not a probability.
NVD base score: 7.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2021-03-05 19:07Z5 YR AGO

Last updated

2024-08-03 21:33Z2 YR AGO

Reserved

2021-03-05

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

CWE-415Double FreeVariant
CWE-416Use After FreeVariant

Data version

5.1

Document digest

dbf3eeb89bb565c6735bbdd4fb8ebdeeee04303f54968de584f3bdb63415ec60

05 Affected products

VendorProductVersionsPlatforms

fedoraprojectfedoraNot specified—

netappcloud_backupNot specified—

netapphci_compute_nodeNot specified—

netapphci_compute_node_firmwareNot specified—

netapphci_management_nodeNot specified—

netapphci_storage_nodeNot specified—

netapphci_storage_node_firmwareNot specified—

netappsolidfireNot specified—

openbsdopensshNot specified—

oraclecommunications_offline_mediation_controllerNot specified—

oraclezfs_storage_applianceNot specified—

redhatenterprise_linuxNot specified—

06 References

www.openssh.comhttps://www.openssh.com/security.htmlx_refsource_MISC
www.openwall.comhttps://www.openwall.com/lists/oss-security/2021/03/03/1x_refsource_MISC
github.comhttps://github.com/openssh/openssh-portable/commit/e04fd6dde16de1cdc5a4d9946397ff60d96568dbx_refsource_MISC
www.openssh.comhttps://www.openssh.com/txt/release-8.5x_refsource_MISC
lists.fedoraproject.orgFEDORA-2021-f68a5a75bahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXST2CML2MWY3PNVUXX7FFJE3ATJMNVZ/vendor-advisoryx_refsource_FEDORA
security.gentoo.orgGLSA-202105-35https://security.gentoo.org/glsa/202105-35vendor-advisoryx_refsource_GENTOO
lists.fedoraproject.orgFEDORA-2021-1d3698089dhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQWGII3LQR4AOTPPFXGMTYE7UDEWIUKI/vendor-advisoryx_refsource_FEDORA
www.oracle.comhttps://www.oracle.com//security-alerts/cpujul2021.htmlx_refsource_MISC
security.netapp.comhttps://security.netapp.com/advisory/ntap-20210416-0002/x_refsource_CONFIRM

01 Record index

CVE-2021-28041

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

02 Records

CVE-2021-28041

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References