VulnerabilityModified

CVE-2015-3249

The HTTP/2 experimental feature in Apache Traffic Server 5.3.x before 5.3.1 allows remote attackers to cause a denial of service (out-of-bounds access and daemon crash) or possibly execute arbitrary code via vectors related to the (1) frame_handlers…

CRITICAL 9.8EPSS 5.44%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.0: 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 5.44% probability · 93th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-119
Affected: apache/traffic server
Source: secalert@redhat.com

EPSS trend

EPSS 5.4% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

http://mail-archives.us.apache.org/mod_mbox/www-announce/201507.mbox/%3CCABF6JR37mWzDmXDqRQwRUXiojBZrhidndnsY1ZgmcZv-o7-a+g%40mail.gmail.com%3E
http://www.securityfocus.com/bid/101631Third Party Advisory, VDB Entry
https://yahoo-security.tumblr.com/post/122883273670/apache-traffic-server-http2-fuzzingIssue Tracking, Third Party Advisory
http://mail-archives.us.apache.org/mod_mbox/www-announce/201507.mbox/%3CCABF6JR37mWzDmXDqRQwRUXiojBZrhidndnsY1ZgmcZv-o7-a+g%40mail.gmail.com%3E
http://www.securityfocus.com/bid/101631Third Party Advisory, VDB Entry
https://yahoo-security.tumblr.com/post/122883273670/apache-traffic-server-http2-fuzzingIssue Tracking, Third Party Advisory

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