CVE-2026-60002

ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2	Release Notes
https://www.openssh.org/releasenotes.html#10.4p1	Release Notes
https://www.openwall.com/lists/oss-security/2026/07/06/5	Mailing List Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

History

25 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) ssh en OpenSSH anterior a 10.4 puede tener un uso después de liberación cuando un servidor cambia su clave de host durante un reintercambio de claves. (Este resultado ocurre solo en el lado del cliente.)

Information

Published : 2026-07-08 01:16

Updated : 2026-10-25 20:10

NVD link : CVE-2026-60002

Mitre link : CVE-2026-60002

CVE.ORG link : CVE-2026-60002

JSON object : View

Products Affected

openbsd

openssh

CWE

CWE-416

Use After Free

{"id": "CVE-2026-60002", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-60002", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-08T13:01:59.614190Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.4, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 3.9}]}, "affected": [{"source": "cve@mitre.org", "affectedData": [{"vendor": "OpenBSD", "product": "OpenSSH", "versions": [{"status": "affected", "version": "0", "lessThan": "10.4", "versionType": "custom"}], "defaultStatus": "unaffected"}]}], "published": "2026-07-08T01:16:29.430", "references": [{"url": "https://marc.info/?l=openssh-unix-dev&m=178333966933090&w=2", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://www.openssh.org/releasenotes.html#10.4p1", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2026/07/06/5", "tags": ["Mailing List", "Release Notes"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)"}, {"lang": "es", "value": "ssh en OpenSSH anterior a 10.4 puede tener un uso despu\u00e9s de liberaci\u00f3n cuando un servidor cambia su clave de host durante un reintercambio de claves. (Este resultado ocurre solo en el lado del cliente.)"}], "lastModified": "2026-10-25T20:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "947E3B1E-F0DF-47BC-87D8-358B55B164AD", "versionEndExcluding": "10.4"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}