OpenBSD OpenSSH up to 10.3 Internal-SFTP privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.57+

Summaryinfo

A vulnerability has been found in OpenBSD OpenSSH up to 10.3 and classified as critical. The impacted element is an unknown function of the component Internal-SFTP. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2026-59997. No exploit exists.

Detailsinfo

A vulnerability was found in OpenBSD OpenSSH up to 10.3. It has been rated as critical. This issue affects an unknown part of the component Internal-SFTP. The impact remains unknown. The summary by CVE is:

internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.

The advisory is shared at openwall.com. The identification of this vulnerability is CVE-2026-59997 since 07/08/2026. The exploitation is known to be easy. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/08/2026).

Upgrading to version 10.4 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenSSH 10.4

Timelineinfo

07/08/2026 Advisory disclosed
07/08/2026 +0 days CVE reserved
07/08/2026 +0 days VulDB entry created
07/08/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: openbsd.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2026-59997 (🔒)
GCVE (CVE): GCVE-0-2026-59997
GCVE (VulDB): GCVE-100-376757

Entryinfo

Created: 07/08/2026 03:18
Changes: 07/08/2026 03:18 (53)
Complete: 🔍
Cache ID: 216::103

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