8.1

CVE-2021-44759: apache software foundation apache traffic server Improper Authentication

CVSS: 8.1v3.1HighModified
AliasesUBUNTU-CVE-2021-44759DEBIAN-CVE-2021-44759
Published 23-03-2022Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-44759 is a high (CVSS 8.1) Improper Authentication vulnerability in apache software foundation apache traffic server. EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (NVD)
EPSS score
1.58%
0%100%
Low · 0.00 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
DSA-5153-1

Timeline

  1. 23-03-2022
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.58%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.58% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.58%

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
Apache1 product
Apache software foundation1 product
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

4 vendors · 5 products

References

5 links