OpenSSH up to 10.2 Certificate authorized_keys control flow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$5k-$25k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in OpenSSH up to 10.2. This vulnerability affects the function authorized_keys of the component Certificate Handler. Performing a manipulation results in control flow. This vulnerability is identified as CVE-2026-35414. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OpenSSH up to 10.2. This affects the function authorized_keys of the component Certificate Handler. The manipulation with an unknown input leads to a control flow vulnerability. CWE is classifying the issue as CWE-670. The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

OpenSSH before 10.3 mishandles the authorized_keys principals option in uncommon scenarios involving a principals list in conjunction with a Certificate Authority that makes certain use of comma characters.

It is possible to read the advisory at openssh.org. This vulnerability is uniquely identified as CVE-2026-35414 since 04/02/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/27/2026).

The vulnerability scanner Nessus provides a plugin with the ID 304837 (Linux Distros Unpatched Vulnerability : CVE-2026-35414), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.3 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (304837) and CERT Bund (WID-SEC-2026-0979). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • IBM AIX
  • IBM VIOS
  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Fedora Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • NetApp ActiveIQ Unified Manager
  • Microsoft Azure Linux
  • Open Source OpenSSH
  • Red Hat OpenShift

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔒

CNA Base Score: 4.2
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Control flow
CWE: CWE-670
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 304837
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-35414

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSSH 10.3

Timelineinfo

04/02/2026 Advisory disclosed
04/02/2026 +0 days CVE reserved
04/02/2026 +0 days VulDB entry created
07/27/2026 +116 days VulDB entry last update

Sourcesinfo

Advisory: openssh.org
Status: Confirmed

CVE: CVE-2026-35414 (🔒)
GCVE (CVE): GCVE-0-2026-35414
GCVE (VulDB): GCVE-100-354951
CERT Bund: WID-SEC-2026-0979 - OpenSSH: Mehrere Schwachstellen

Entryinfo

Created: 04/02/2026 19:35
Updated: 07/27/2026 05:51
Changes: 04/02/2026 19:35 (64), 04/06/2026 11:23 (2), 05/04/2026 01:49 (7), 06/04/2026 04:47 (1), 07/27/2026 05:51 (12)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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