CVE-2024-6387
HighExploitedPublic exploitopenssh: regreSSHion - race condition in SSH allows RCE/DoS
Published Jul 2, 2024 · Updated Oct 16, 2026 · Also known as ALPINE-CVE-2024-6387, DEBIAN-CVE-2024-6387, DSA-5724-1, JLSEC-2026-71, RegreSSHion, SUSE-SU-2024:2275-1, TR-24-0846, UBUNTU-CVE-2024-6387, USN-6859-1, regreSSHion
Key Facts
Patch immediately- CVE-2024-6387 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting Active Iq Unified Manager (Netapp), E-Series Santricity OS Controller (Netapp), Ontap (Netapp) and 22 more products.
- It is exploited in the wild, listed in Industry KEV feed since Jul 17, 2024. Public exploit code is available.
- EPSS estimates a 100% probability of exploitation in the next 30 days.
- Fixed versions are available, including apple macos 12.7.6, apple macos 13.6.8, apple macos 14.6.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
8.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
100%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2024-6387 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jul 17, 2024 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
224 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Active Iq Unified ManagerNetapp | See advisory | n/a |
| E-Series Santricity OS ControllerNetapp | See advisory | 11.70.2 |
| OntapNetapp | 9 | n/a |
| Ontap Select Deploy Administration UtilityNetapp | See advisory | n/a |
| Ontap ToolsNetapp | 10, 9 | n/a |
Patched Releases
apple macos
12.7.6, 13.6.8, 14.6
arista eos
4.32.1f
E-Series Santricity OS Controller
11.70.2
netbsd
10.0.0
OpenSSH
4.4, 0:8.7p1-12.el9_0.1, 0.10.4-5.38.el9_4.1, 1:8.9p1-3ubuntu0.10, 1:9.2p1-2+deb12u3, 1:9.6p1-3ubuntu13.3, 1:9.7p1-7, 8.7p1-38.0.2.el9, 8.7p1-38.0.2.el9_4.1, 8.7p1-8.amzn2023.0.11, 8.9p1-6, 8.9p1-8.ph4, 9.1_p1-r6, 9.3_p2-r2, 9.3p2-9.ph5, 9.6_p1-r1, 9.6p1-10.1, 9.6p1-150600.6.3.1, 9.6p1-2.1, 9.7_p1-r4, 9.8_p1-r0, 9.8p1-1
OpenSSH_jll
9.9.1+0
openssh-askpass
8.7p1-38.0.2.el9, 8.7p1-38.0.2.el9_4.1
openssh-askpass-gnome
9.6p1-150600.6.3.1
openssh-cavs
9.6p1-10.1, 9.6p1-150600.6.3.1
openssh-clients
8.7p1-38.0.2.el9, 8.7p1-38.0.2.el9_4.1, 8.7p1-8.amzn2023.0.11, 8.9p1-8.ph4, 9.3p2-9.ph5, 9.6p1-10.1, 9.6p1-150600.6.3.1, 9.6p1-2.1
openssh-common
9.6p1-10.1, 9.6p1-150600.6.3.1, 9.6p1-2.1
openssh-fips
9.6p1-10.1, 9.6p1-150600.6.3.1, 9.6p1-2.1
openssh-helpers
9.6p1-10.1, 9.6p1-150600.6.3.1
openssh-keycat
8.7p1-38.0.2.el9, 8.7p1-38.0.2.el9_4.1, 8.7p1-8.amzn2023.0.11
openssh-server
8.7p1-38.0.2.el9, 8.7p1-38.0.2.el9_4.1, 8.7p1-8.amzn2023.0.11, 8.9p1-8.ph4, 9.3p2-9.ph5, 9.6p1-10.1, 9.6p1-150600.6.3.1, 9.6p1-2.1
openssh-server-config-disallow-rootlogin
9.6p1-150600.6.3.1
openssh-server-config-rootlogin
9.6p1-10.1, 9.6p1-2.1
openssh-socket
8.9p1-8.ph4, 9.3p2-9.ph5
pam_ssh_agent_auth
0.10.4-4.8.amzn2023.0.11, 0.10.4-5.38.0.2.el9, 0.10.4-5.38.0.2.el9_4.1
rhcos
413.92.202407091321-0
rootio-openssh
1:9.2p1-2+deb12u3, 1:9.7p1-7, 9.3_p2-r2
Timeline
Publicly disclosed
Jul 2, 2024
Added to Industry KEV feed
Jul 17, 2024
Last updated
Oct 16, 2026
Weakness Type
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- CWE-364 Signal Handler Race Condition
References
- advisoryRHSA-2024:4312
- advisoryRHSA-2024:4340
- advisoryRHSA-2024:4389
- advisoryRHSA-2024:4469
- advisoryRHSA-2024:4474
FAQ
Common Questions.
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd).
Affected: Active Iq Unified Manager (Netapp); E-Series Santricity OS Controller (Netapp); Ontap (Netapp) versions 9, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jul 17, 2024.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including apple macos 12.7.6, apple macos 13.6.8, apple macos 14.6.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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