OpenSSH up to 10.2 control flow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$5k-$25k0.00

Summaryinfo

A vulnerability classified as problematic has been found in OpenSSH up to 10.2. The impacted element is an unknown function. This manipulation causes control flow. This vulnerability is registered as CVE-2026-35387. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in OpenSSH up to 10.2 and classified as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a control flow vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

OpenSSH before 10.3 can use unintended ECDSA algorithms. Listing of any ECDSA algorithm in PubkeyAcceptedAlgorithms or HostbasedAcceptedAlgorithms is misinterpreted to mean all ECDSA algorithms.

It is possible to read the advisory at openssh.org. This vulnerability is known as CVE-2026-35387 since 04/02/2026. The exploitation appears to be difficult. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/26/2026).

The vulnerability scanner Nessus provides a plugin with the ID 304835 (Linux Distros Unpatched Vulnerability : CVE-2026-35387), 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 (304835) and CERT Bund (WID-SEC-2026-0979). Statistical analysis made it clear that VulDB provides the best quality 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: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔒

CNA Base Score: 3.1
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: 304835
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-35387

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
07/26/2026 +115 days VulDB entry last update

Sourcesinfo

Advisory: openssh.org
Status: Confirmed

CVE: CVE-2026-35387 (🔒)
GCVE (CVE): GCVE-0-2026-35387
GCVE (VulDB): GCVE-100-354955
CERT Bund: WID-SEC-2026-0979 - OpenSSH: Mehrere Schwachstellen

Entryinfo

Created: 04/02/2026 19:36
Updated: 07/26/2026 21:06
Changes: 04/02/2026 19:36 (62), 04/06/2026 11:23 (2), 05/04/2026 01:49 (7), 06/04/2026 04:47 (1), 07/26/2026 21:06 (12)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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