6.5

CVE-2021-41973: apache software foundation apache mina Infinite Loop

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-41973DEBIAN-CVE-2021-41973CGA-ch87-cjff-9vj2
Published 01-11-2021Last modified 04-08-2024

Vulnerability summary

CVE-2021-41973 is a medium (CVSS 6.5) Infinite Loop vulnerability in apache software foundation apache mina. EPSS estimates a 4.63% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
4.63%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-11-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. Please update MINA to 2.1.5 or greater.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

4.63%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.63% on 18-09-2026

18-09-202618-10-2026
EPSS score
4.63%

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

Oracle8 products
Ubuntu2 products
  • minaAll versions (No fix recorded)
  • mina2All versions (No fix recorded)
Apache1 product
  • mina< 2.0.22 | ≥ 2.1.0, < 2.1.5
Apache software foundation1 product
Chainguard1 product
  • hadoop-fips-3.3.6All versions (No fix recorded)
Debian1 product
  • mina2< 2.1.5-1
Org.apache.mina1 product
  • mina-core≥ 2.1.0, < 2.1.5 | < 2.0.22

7 vendors · 15 products

References

9 links