CVE catalog

CVE-2021-27737

trafficserver: CVE-2021-27737

Severity: Low
Published: May 14, 2021, 9:15:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.69% · Oct 25, 2026

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

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	trafficserver	bookworm	`9.2.5+ds-0+deb12u4`	not affected
Debian	trafficserver	bookworm-security	`9.2.5+ds-0+deb12u4`	not affected

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	trafficserver	source	bookworm	`Not affected`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[trafficserver]Not affected
Details (4)
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm
[trafficserver-dev]Not affected
Source package: [trafficserver]
Details (4)
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm
[trafficserver-experimental-plugins]Not affected
Source package: [trafficserver]
Details (4)
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · amd64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm
- 9.2.5+ds-0+deb12u4 · arm64 · bookworm-security
  Not affected
  dsa · trafficserver · debian · bookworm

Observed: Oct 23, 2026, 5:55:26 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]