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Public proof of concept

CVE-2016-9244

A public proof of concept exists; no exploitation attested.

  • Published2017-02-09
  • WeaknessCWE-200

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may leak up to 31 bytes of uninitialized memory. A remote attacker may exploit this vulnerability to obtain Secure Sockets Layer (SSL) session IDs from other sessions. It is possible that other data from uninitialized memory may be returned as well.

Timeline

dates in UTC
  1. 2017-02-0915:59CVE publishedNVD
  2. 2026-10-2319:23First public proof of conceptPoC-in-GitHub
  3. 2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-9244?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-9244?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
F5 big-ip access policy manager
BranchAffectedFixed in
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published
11.6= 11.6.0no fix published
11.6= 11.6.1no fix published
12.0= 12.0.0no fix published
12.1= 12.1.0no fix published
12.1= 12.1.1no fix published
F5 big-ip advanced firewall manager
BranchAffectedFixed in
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published
11.6= 11.6.0no fix published
11.6= 11.6.1no fix published
12.0= 12.0.0no fix published
12.1= 12.1.0no fix published
12.1= 12.1.1no fix published
F5 big-ip analytics
BranchAffectedFixed in
11.4= 11.4.0no fix published
11.4= 11.4.1no fix published
11.5= 11.5.0no fix published
11.5= 11.5.1no fix published
11.5= 11.5.2no fix published
11.5= 11.5.3no fix published
11.5= 11.5.4no fix published
11.6= 11.6.0no fix published
11.6= 11.6.1no fix published
12.0= 12.0.0no fix published
12.1= 12.1.0no fix published
12.1= 12.1.1no fix published

7 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

read 2026-10-23 19:23 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
2 repositories, unverifiedEgeBalci/Ticketbleedglestel/minion-ticket-bleed-plugin
PoC-in-GitHub

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • NVDweakness (CWE)CWE-200read 2026-10-23
  • FIRST EPSSEPSS score74.0 %read 2026-10-23
  • PoC-in-GitHubproof of concept2read 2026-10-23

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2017-02-09
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2016-9244?

A BIG-IP virtual server configured with a Client SSL profile that has the non-default Session Tickets option enabled may leak up to 31 bytes of uninitialized memory. A remote attacker may exploit this vulnerability to obtain Secure Sockets Layer (SSL) session IDs from other sessions. It is possible that other data from uninitialized memory may be returned as well.

Is CVE-2016-9244 actively exploited?

Active exploitation of CVE-2016-9244 has not been confirmed. Its EPSS score was 74.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-9244?

CVE-2016-9244 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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