How severe is CVE-2026-73283?

CVE-2026-73283 has a CVSS 3.x base score of 2.5, rated low severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-73283 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73283?

CVE-2026-73283 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-73283?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-73283 published?

CVE-2026-73283 was published on 2026-08-11 and last updated on 2026-09-04.

CVE-2026-73283

CVE-2026-73283 is a low-severity vulnerability in Openbsd Openssh with a CVSS 3.x base score of 2.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-670.

Key facts

Severity: Low (CVSS 3.x base score 2.5)
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-670
Affected product: Openbsd Openssh
Published: 2026-08-11
Last modified: 2026-09-04

Description

In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.

Frequently asked questions

What is CVE-2026-73283?: In sshd in OpenSSH before 10.5, the restrict keyword (in authorized_keys) was supposed to be applicable to tunnel forwarding but was not.
How severe is CVE-2026-73283?: CVE-2026-73283 has a CVSS 3.x base score of 2.5, rated low severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-73283 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73283?: CVE-2026-73283 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-73283?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-73283 published?: CVE-2026-73283 was published on 2026-08-11 and last updated on 2026-09-04.

References

https://www.openssh.org/releasenotes.html#10.5

Affected products (1)

cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*

More vulnerabilities in Openbsd Openssh

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All CVEs affecting Openbsd Openssh →

Other CWE-670 vulnerabilities

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CVE-2022-25745 — Critical (CVSS 9.8): Memory corruption in modem due to improper input validation while handling the incoming CoAP message
CVE-2020-1914 — Critical (CVSS 9.8): A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit…
CVE-2020-17466 — Critical (CVSS 9.8): Turcom TRCwifiZone through 2020-08-10 allows authentication bypass by visiting manage/control.php and ignoring 302…
CVE-2019-17192 — Critical (CVSS 9.8): The WebRTC component in the Signal Private Messenger application through 4.47.7 for Android processes videoconferencing…
CVE-2026-16392 — Critical (CVSS 9.1): JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 153 and Thunderbird…

Browse all CWE-670 vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

141.11.122.40 (ipv4-addr)
47.94.92.194 (ipv4-addr)
121.199.163.141 (ipv4-addr)
120.55.92.241 (ipv4-addr)
34.140.23.40 (ipv4-addr)
164.92.182.157 (ipv4-addr)
14.206.0.20 (ipv4-addr)
91.204.209.37 (ipv4-addr)