CVE-2021-21439

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.87% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.3% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2021-06-14 07:55Z5 YR AGO

Last updated

2024-09-16 19:52Z1 YR AGO

Reserved

2020-12-29

Assigning CNA

OTRS

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weaknesses

• CWE-754Improper Check for Unusual or Exceptional ConditionsClass
• CWE-755Improper Handling of Exceptional ConditionsClass

Data version

5.1

Document digest

ea519d7286436068bedd423df0a7b22b72a4aa86e30f7ac9e85964d8b1c8680a

• otrs.comhttps://otrs.com/release-notes/otrs-security-advisory-2021-09/
• lists.debian.org[debian-lts-announce] 20230831 [SECURITY] [DLA 3551-1] otrs2 security updatehttps://lists.debian.org/debian-lts-announce/2023/08/msg00040.htmlmailing-list