How severe is CVE-2023-46445?

CVE-2023-46445 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-46445 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-46445?

CVE-2023-46445 affects Asyncssh Project Asyncssh. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-46445?

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

When was CVE-2023-46445 published?

CVE-2023-46445 was published on 2023-11-14 and last updated on 2026-06-17.

CVE-2023-46445

CVE-2023-46445 is a medium-severity vulnerability in Asyncssh Project Asyncssh with a CVSS 3.x base score of 5.9. 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-345.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Asyncssh Project Asyncssh
Published: 2023-11-14
Last modified: 2026-06-17

Description

An issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."

Frequently asked questions

What is CVE-2023-46445?: An issue in AsyncSSH before 2.14.1 allows attackers to control the extension info message (RFC 8308) via a man-in-the-middle attack, aka a "Rogue Extension Negotiation."
How severe is CVE-2023-46445?: CVE-2023-46445 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-46445 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-46445?: CVE-2023-46445 affects Asyncssh Project Asyncssh. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-46445?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-46445 published?: CVE-2023-46445 was published on 2023-11-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:asyncssh_project:asyncssh:*:*:*:*:*:*:*:*

More vulnerabilities in Asyncssh Project Asyncssh

CVE-2018-7749 — Critical (CVSS 9.8): The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed…
CVE-2023-46446 — Medium (CVSS 6.8): An issue in AsyncSSH before 2.14.1 allows attackers to control the remote end of an SSH client session via packet…
CVE-2023-48795 — Medium (CVSS 5.9): The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows…

All CVEs affecting Asyncssh Project Asyncssh →

Other CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities

CVE-2026-35051 — Critical (CVSS 10.0): Traefik is an HTTP reverse proxy and load balancer. Prior to versions 2.11.43, 3.6.14, and 3.7.0-rc.2, there is an…
CVE-2014-8165 — Critical (CVSS 10.0): scripts/amsvis/powerpcAMS/amsnet.py in powerpc-utils-python uses the pickle Python module unsafely, which allows remote…
CVE-2026-50195 — Critical (CVSS 9.9): containerd is an open-source container runtime. Versions prior to 2.3.2, 2.2.5 and 2.1.9 contain a vulnerability in the…
CVE-2022-36130 — Critical (CVSS 9.9): HashiCorp Boundary up to 0.10.1 did not properly perform data integrity checks to ensure the resources were associated…
CVE-2026-50214 — Critical (CVSS 9.8): The /v1/Plan service relies entirely on a shared global API token for full administrative management, allowing…
CVE-2025-15385 — Critical (CVSS 9.8): Insufficient Verification of Data Authenticity vulnerability in TECNO Mobile com.Afmobi.Boomplayer allows…

Browse all CWE-345 (Insufficient Verification of Data Authenticity) vulnerabilities →