9.8

CVE-2018-7749: asyncssh_project asyncssh Improper Authentication

Modified
AliasesGHSA-97cv-6pjf-5f9qPYSEC-2018-108UBUNTU-CVE-2018-7749
Published 12-03-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-7749 is a critical (CVSS 9.8) Improper Authentication vulnerability in asyncssh_project asyncssh. EPSS estimates a 1.75% chance of exploitation in the next 30 days, higher than 77.8% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (NVD); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.0 (NVD)
EPSS score
1.75%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 12-03-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The SSH server implementation of AsyncSSH before 1.12.1 does not properly check whether authentication is completed before processing other requests. A customized SSH client can simply skip the authentication step.

CVSS metrics

6 scores · 4 sources · 4 versions

EPSS trend

Probability

1.75%

Chance of exploitation in the next 30 days

Percentile

78%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 1.73% 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< 1.12.1-1
PyPI1 product
  • asyncssh< c161e26cdc0d41b745b63d9f17b437f073bf7ba4 | < 1.12.1
Ubuntu1 product
  • python-asyncsshAll versions (No fix recorded) | < 1.11.1-1ubuntu0.1~esm1

4 vendors · 4 products

References

12 links
Show all 12 references