5.9

CVE-2023-46445: asyncssh_project asyncssh

Modified
AliasesGHSA-cfc2-wr2v-gxm5PYSEC-2023-237UBUNTU-CVE-2023-46445
Published 14-11-2023Last modified 25-02-2026

Vulnerability summary

CVE-2023-46445 is a medium (CVSS 5.9) vulnerability in asyncssh_project asyncssh. EPSS estimates a 0.59% chance of exploitation in the next 30 days, higher than 48% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.9, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.59%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 3
DLA-3899-1OPENSUSE-SU-2026:11851-1USN-7108-1USN-7108-2

Timeline

  1. 14-11-2023
    PublishedVulnerability first disclosed.
  2. 25-02-2026
    Last modifiedVulnerability information updated.

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."

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.59%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.59% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Asyncssh_project1 product
Debian1 product
  • python-asyncssh< 2.10.1-2+deb12u2 | < 2.15.0-1
PyPI1 product
  • asyncssh< 2.14.1
Ubuntu1 product
  • python-asyncsshAll versions (No fix recorded) | < 1.11.1-1ubuntu0.1~esm2 | < 1.12.2-1ubuntu0.2 | < 2.5.0-1ubuntu0.1 | < 2.10.1-2ubuntu0.1+esm1

4 vendors · 4 products

References

19 links
Show all 19 references