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CVE-2026-106553

7.5, high

In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.1% higher than 2.7% of scored CVEs
Exploitation
No public evidence
Published
6 Oct 202611 days ago

Description

In sshd in OpenSSH before 10.6, credentials can incorrectly persist after failure of a GSSAPIAuthentication authentication attempt.

Details

Vendor
OpenBSD
Product
OpenSSH
Weakness
CWE-669 (opens in a new tab)
Status
Analyzed
Updated
13 Oct 2026
Assigner
cve@mitre.org

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other OpenBSD CVEs

Every OpenBSD CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2020-7247 OpenSMTPD Remote Code Execution Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2026-106583 In ssh in OpenSSH before 10.6, a $ or \ character can occur in a command-line username, leading to injection EPSS 0.2% 7.8, high
  • CVE-2026-106555 In sshd in OpenSSH before 10.6, GSSAPIAuthentication authentication state can incorrectly be persisted across authentication attempts EPSS 0.1% 7.5, high

Beyond this page

Is CVE-2026-106553 in your network?

This page tells you how dangerous CVE-2026-106553 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-106553 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.