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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…
High7.5EPSS 74.0%
- Published
- Updated
- Reserved
- Assigned by
- f5
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 74.0% · top 0.5% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- TLS Session Ticket uninitialized memory leak
- CWE-200 (opens in a new tab)
Affected products
F5 Networks · F5 BIG-IP LTM, AAM, AFM, Analytics, APM, ASM, GTM, Link Controller, PEM, PSM
- affected 11.6.1 before 11.6.1 HF1 and 12.1.x before 12.1.2
References (8)
- https://support.f5.com/csp/article/K05121675 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 41298 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://filippo.io/Ticketbleed/ (opens in a new tab)x_refsource_MISCx_transferred
- 96143 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://blog.filippo.io/finding-ticketbleed/ (opens in a new tab)x_refsource_MISCx_transferred
- 1037800 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://packetstormsecurity.com/files/141017/Ticketbleed-F5-TLS-Information-Disclosure.html (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/0x00string/oldays/blob/master/CVE-2016-9244.py (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .