CVE-2016-9244

HIGH

BIG-IP Local Traffic Manager - Exposure of Sensitive Information via Session Tickets

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 4 public exploits for CVE-2016-9244. PoCs published by @0x00string, Ege Balci, EgeBalci.

AI-analyzed exploit summary This exploit demonstrates the Ticketbleed vulnerability (CVE-2016-9244) in F5 BIG-IP devices by leaking session IDs through malformed TLS session tickets. It uses Scapy with SSL/TLS extensions to craft and send malicious TLS handshake packets.

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.

Exploits (4)

exploitdb WORKING POC
by @0x00string · pythonremotehardware
https://www.exploit-db.com/exploits/44446

This exploit demonstrates the Ticketbleed vulnerability (CVE-2016-9244) in F5 BIG-IP devices by leaking session IDs through malformed TLS session tickets. It uses Scapy with SSL/TLS extensions to craft and send malicious TLS handshake packets.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: F5 BIG-IP (versions affected per advisory)
No auth needed
Prerequisites: Network access to target F5 BIG-IP device · Python with Scapy and SSL/TLS extensions
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC
by Ege Balci · textremotehardware
https://www.exploit-db.com/exploits/41298

This exploit targets CVE-2016-9244, a memory leakage vulnerability in F5 BIG-IP SSL virtual servers. It checks for vulnerability and attempts to leak memory contents by sending crafted requests to the target.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: F5 BIG-IP (versions 12.0.0 - 12.1.2, 11.4.0 - 11.6.1)
No auth needed
Prerequisites: Network access to the target F5 BIG-IP SSL virtual server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC 30 stars
by EgeBalci · poc
https://github.com/EgeBalci/Ticketbleed

This repository contains a functional exploit for CVE-2016-9244 (Ticketbleed), a vulnerability in F5 BIG-IP products that allows remote extraction of uninitialized memory. The tool is a modified version of Go's crypto/tls library, specifically altered to exploit the Ticketbleed flaw.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: F5 BIG-IP (versions 12.0.0-12.1.2, 11.4.0-11.6.1)
No auth needed
Prerequisites: Network access to vulnerable F5 BIG-IP instance
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec SCANNER
by glestel · poc
https://github.com/glestel/minion-ticket-bleed-plugin

This repository contains a Minion plugin for detecting the Ticketbleed vulnerability (CVE-2016-9244) in F5 TLS implementations. It includes a Go-based scanner derived from Filippo Valsorda's work, integrated into a Minion framework for automated vulnerability assessment.

Classification
Scanner 90%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: F5 BIG-IP TLS implementations
No auth needed
Prerequisites: Network access to target F5 device · Go environment for compilation
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (8)

Core 8
Core References
Mitigation, Vendor Advisory x_refsource_confirm
https://support.f5.com/csp/article/K05121675
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41298/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/96143
Various Sources x_refsource_misc
https://blog.filippo.io/finding-ticketbleed/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1037800
Various Sources x_refsource_misc
https://filippo.io/Ticketbleed/

Scores

CVSS v3 7.5
EPSS 0.7327
EPSS Percentile 99.4%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (50)
f5/big-ip_access_policy_manager 11.4.0
f5/big-ip_access_policy_manager 11.4.1
f5/big-ip_access_policy_manager 11.5.0
f5/big-ip_access_policy_manager 11.5.1
f5/big-ip_access_policy_manager 11.5.2
f5/big-ip_access_policy_manager 11.5.3
f5/big-ip_access_policy_manager 11.5.4
f5/big-ip_access_policy_manager 11.6.0
f5/big-ip_access_policy_manager 11.6.1
f5/big-ip_access_policy_manager 12.0.0
... and 40 more
Published Feb 09, 2017
Tracked Since Feb 18, 2026