7.5

CVE-2021-27737: apache traffic_server

CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2021-27737
Published 14-05-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-27737 is a high (CVSS 7.5) vulnerability in apache traffic_server. EPSS estimates a 3.69% chance of exploitation in the next 30 days, higher than 89.5% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
3.69%
0%100%
Low · -0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

3.69%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

-0.10 pp

From 3.80% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.69%

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

No weakness data has been published for this record.

Affected systems

Apache1 product
Ubuntu1 product
  • trafficserverAll versions (No fix recorded)

2 vendors · 2 products

References

8 links