6.5

CVE-2021-40491: debian debian_linux

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-40491USN-5177-1DEBIAN-CVE-2021-40491
Published 03-09-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-40491 is a medium (CVSS 6.5) vulnerability in debian debian_linux. EPSS estimates a 0.99% chance of exploitation in the next 30 days, higher than 61.9% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.99%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
DLA-3205-1

Timeline

  1. 03-09-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

The ftp client in GNU Inetutils before 2.2 does not validate addresses returned by PASV/LSPV responses to make sure they match the server address. This is similar to CVE-2020-8284 for curl.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.99%

Chance of exploitation in the next 30 days

Percentile

62%

Versus all other CVEs

30-day change

-0.04 pp

From 1.03% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.99%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Gnu1 product
Ubuntu1 product
  • inetutils< 2:1.9.2-1ubuntu0.1~esm1 | < 2:1.9.4-1ubuntu0.1~esm2 | < 2:1.9.4-3ubuntu0.1+esm1 | < 2:1.9.4-11ubuntu0.1+esm1

3 vendors · 4 products

References

8 links