How severe is CVE-2026-35414?

CVE-2026-35414 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-35414 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35414?

CVE-2026-35414 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35414?

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

Does CVE-2026-35414 have an EU (EUVD) identifier?

Yes. CVE-2026-35414 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18480.

When was CVE-2026-35414 published?

CVE-2026-35414 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-35414

CVE-2026-35414 is a medium-severity vulnerability in Openbsd Openssh with a CVSS 3.x base score of 4.2. 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: Medium (CVSS 3.x base score 4.2)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18480
Weakness: CWE-670
Affected product: Openbsd Openssh
Published: 2026-04-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-35414?: 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.
How severe is CVE-2026-35414?: CVE-2026-35414 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-35414 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35414?: CVE-2026-35414 affects Openbsd Openssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35414?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-35414 have an EU (EUVD) identifier?: Yes. CVE-2026-35414 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18480.
When was CVE-2026-35414 published?: CVE-2026-35414 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Openbsd Openssh

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CVE-2002-0640 — Critical (CVSS 10.0): Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large…
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CVE-2000-0999 — Critical (CVSS 10.0): Format string vulnerabilities in OpenBSD ssh program (and possibly other BSD-based operating systems) allow attackers…
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All CVEs affecting Openbsd Openssh →

Other CWE-670 vulnerabilities

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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-2026-55276 — Critical (CVSS 9.1): Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty…

Browse all CWE-670 vulnerabilities →

Threat intelligence

Threat-intel indicators referencing this CVE:

152.32.208.73 (ipv4-addr)
152.32.217.163 (ipv4-addr)
152.32.204.21 (ipv4-addr)
152.32.145.49 (ipv4-addr)
104.218.164.192 (ipv4-addr)
165.154.162.193 (ipv4-addr)
165.154.11.210 (ipv4-addr)
152.32.207.42 (ipv4-addr)