CVE & CISA-KEV CatalogNVD
CVE-2024-6387
HIGHEPSS 100th pctl8.1
CVSS v3
Description
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
How to fix
Remediation Available
opensshDebian
Fixed in:1:9.2p1-2+deb12u3CVE-2024-6387
Fixed in:1:9.7p1-7CVE-2024-6387
Fixed in:1:9.7p1-7CVE-2024-6387
opensshRed Hat / RHEL
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
opensshRocky
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-askpassRocky
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-askpassRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-askpass-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-askpass-debuginfoRocky
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-clientsRed Hat / RHEL
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-clientsRocky
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-clients-debuginfoRocky
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-clients-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-debuginfoRocky
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-debugsourceRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-debugsourceRocky
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-keycatRocky
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-keycatRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-keycat-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-keycat-debuginfoRocky
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-serverRocky
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-serverRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-server-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
Fixed in:0:8.7p1-12.el9_0.1RHSA-2024:4389
openssh-server-debuginfoRocky
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
openssh-sk-dummy-debuginfoRocky
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
openssh-sk-dummy-debuginfoRed Hat / RHEL
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
Fixed in:0:8.7p1-38.el9_4.1RHSA-2024:4312
Fixed in:0:8.7p1-30.el9_2.4RHSA-2024:4340
pam_ssh_agent_authRed Hat / RHEL
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
pam_ssh_agent_authRocky
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
pam_ssh_agent_auth-debuginfoRed Hat / RHEL
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
pam_ssh_agent_auth-debuginfoRocky
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-4.12.el9_0.1RHSA-2024:4389
Fixed in:0:0.10.4-5.30.el9_2.4RHSA-2024:4340
Fixed in:0:0.10.4-5.38.el9_4.1RHSA-2024:4312
opensshUbuntu
Fixed in:1:8.9p1-3ubuntu0.10USN-6859-1
Fixed in:1:9.3p1-1ubuntu3.6USN-6859-1
Fixed in:1:9.6p1-3ubuntu13.3USN-6859-1
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
99.51%probability of exploitation in 30 days
100thpercentile
Very high risk: more likely to be exploited than 100% of all known CVEs.
References
Patch1
Exploit7
Third-Party Advisory14
Issue Tracking4
Mailing List23
Release Notes1
Related Vulnerabilities
Other CWE-364 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-6409 | High | 7.0 | 28% | - | Fix |
| CVE-2024-7589 | High | 8.1 | 2.0% | - | Fix |
| CVE-2025-4598 | Medium | 4.7 | 1.3% | - | Fix |
| CVE-1999-0035 | Medium | 5.4 | 0.8% | - | - |
| CVE-2023-1285 | High | 7.5 | 0.7% | - | - |
| CVE-2026-24792 | High | 8.1 | 0.4% | - | - |
Common questions
How do I fix CVE-2024-6387?
Published advisories record a fix for 32 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2024-6387 being actively exploited?
Not that we know of. CVE-2024-6387 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 99.5% is the estimated probability that it will be exploited in the next 30 days. That is higher than 100% of all scored CVEs.
How severe is CVE-2024-6387?
CVE-2024-6387 has a CVSS v3 base score of 8.1, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2024-6387 affect?
Published advisories record a fix for openssh (Debian), openssh (Red Hat / RHEL), openssh (Rocky), openssh-askpass (Rocky), and 28 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2024-6387
Markdown
[](https://tridentstack.com/cve/CVE-2024-6387)HTML
<a href="https://tridentstack.com/cve/CVE-2024-6387"><img src="https://tridentstack.com/cve/badge/CVE-2024-6387.svg" alt="CVE-2024-6387"></a>Check your Linux endpoints for this class of vulnerability
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-15.