6.5

CVE-2021-21439: otrs ag otrs

CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-21439DEBIAN-CVE-2021-21439
Published 14-06-2021Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2021-21439 is a medium (CVSS 6.5) vulnerability in otrs ag otrs. EPSS estimates a 0.88% chance of exploitation in the next 30 days, higher than 58.3% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.88%
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
DLA-3551-1

Timeline

  1. 14-06-2021
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.88%

Chance of exploitation in the next 30 days

Percentile

58%

Versus all other CVEs

30-day change

0.00 pp

From 0.88% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.88%

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

Otrs ag2 products
Debian1 product
  • otrs2< 6.0.32-5
Otrs1 product
  • otrs≥ 6.0.1, ≤ 6.0.30 | ≥ 7.0.0, < 7.0.27 | ≥ 8.0.0, < 8.0.14
Ubuntu1 product
  • otrs2All versions (No fix recorded)

4 vendors · 5 products

References

5 links