OpenBSD OpenSSH up to 10.0 ssh URI neutralization of null byte

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in OpenBSD OpenSSH up to 10.0. This vulnerability affects unknown code of the component ssh URI Handler. Such manipulation leads to neutralization of null byte. This vulnerability is listed as CVE-2025-61985. The attack must be carried out locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH up to 10.0 and classified as problematic. Affected by this issue is some unknown functionality of the component ssh URI Handler. The manipulation with an unknown input leads to a neutralization of null byte vulnerability. Using CWE to declare the problem leads to CWE-158. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes NUL characters or null bytes when they are sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

ssh in OpenSSH before 10.1 allows the '\0' character in an ssh:// URI, potentially leading to code execution when a ProxyCommand is used.

The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2025-61985 since 10/06/2025. The exploitation is known to be difficult. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/10/2026).

The vulnerability scanner Nessus provides a plugin with the ID 275509 (SUSE SLES12 Security Update : openssh8.4 (SUSE-SU-2025:4098-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 10.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (275509) and CERT Bund (WID-SEC-2025-2212). Once again VulDB remains the best source for vulnerability data.

Affected

  • IBM VIOS
  • IBM AIX
  • Red Hat Enterprise Linux
  • Fedora Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source OpenSSH
  • Meinberg LANTIME

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.1
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 3.6
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Neutralization of null byte
CWE: CWE-158 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 275509
Nessus Name: SUSE SLES12 Security Update : openssh8.4 (SUSE-SU-2025:4098-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSSH 10.1

Timelineinfo

10/06/2025 Advisory disclosed
10/06/2025 +0 days CVE reserved
10/06/2025 +0 days VulDB entry created
01/10/2026 +96 days VulDB entry last update

Sourcesinfo

Vendor: openbsd.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2025-61985 (🔒)
GCVE (CVE): GCVE-0-2025-61985
GCVE (VulDB): GCVE-100-327308
CERT Bund: WID-SEC-2025-2212 - OpenSSH: Mehrere Schwachstellen ermöglichen Codeausführung

Entryinfo

Created: 10/06/2025 21:26
Updated: 01/10/2026 02:34
Changes: 10/06/2025 21:26 (64), 10/07/2025 19:53 (7), 11/16/2025 15:15 (2), 12/20/2025 18:51 (1), 01/07/2026 08:42 (1), 01/10/2026 02:34 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!