SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2016-5396

Apache Traffic Server 6.0.0 to 6.2.0 are affected by an HPACK Bomb Attack.

HIGH 7.5EPSS 2.88%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Apache Traffic Server 6.0.0 to 6.2.0 are affected by an HPACK Bomb Attack.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
2.88% probability · 87th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-399
Affected
apache/traffic server
Source
security@apache.org
EPSS trend
0%3%5%26 October 2026: 2.88%26 October 202626 October 2026

EPSS 2.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.