Vulnerability · Published May 14, 2021 · Assigned by apache
CVE-2021-27737
High 7.5
In plain English
A high-severity security flaw in Apache Traffic Server. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.7% (higher than 90% of all known vulnerabilities).
Severity (CVSS NVD)7.5High
Exploit odds (30 days)3.7%top 10.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:24.04:LTS | trafficserver | no fix listed | UBUNTU-CVE-2021-27737 |
| Ubuntu:25.10 | trafficserver | no fix listed | UBUNTU-CVE-2021-27737 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Apache Traffic Server | Apache Traffic Server 9.0.0 |
References
- [trafficserver-announce] 20210513 Apache Traffic Server is vulnerable to a DOS attack in the experimental Slicer plugin mailing-list, x_refsource_MLIST
- [trafficserver-dev] 20210513 Apache Traffic Server is vulnerable to a DOS attack in the experimental Slicer plugin mailing-list, x_refsource_MLIST
- [trafficserver-users] 20210513 Apache Traffic Server is vulnerable to a DOS attack in the experimental Slicer plugin mailing-list, x_refsource_MLIST