On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) against RSA, which when exploited, may result in plaintext recovery of encrypted messages and/or a Man-in-the-middle (MiTM) attack, despite the attacker not having gained access to the server's private key itself, aka a ROBOT attack.
CVE-2017-6168
Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.4; sources differ by 0.0.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.4
- EG Score
- 7.4(medium)
- EPSS
- 97.3%
- KEV
- Not listed
Published
November 17, 2017
Last Modified
May 13, 2026
References (10)
- f5sirt@f5http://www.securityfocus.com/bid/101901
- f5sirt@f5http://www.securitytracker.com/id/1039839
- f5sirt@f5https://robotattack.org/
- f5sirt@f5https://support.f5.com/csp/article/K21905460
- f5sirt@f5https://www.kb.cert.org/vuls/id/144389
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/101901
- af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1039839
- af854a3a-2127-422b-91ae-364da2661108https://robotattack.org/
- af854a3a-2127-422b-91ae-364da2661108https://support.f5.com/csp/article/K21905460
- af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/144389
Data Freshness Timeline
(refreshed 9× in last 7d / 40× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-06-19 19:23 UTCEPSS rescore
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- 2026-05-22 07:52 UTCEG score recompute
- 2026-05-22 07:52 UTCGHSA enrichment
- 2026-05-20 22:37 UTCEPSS rescore
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- 2026-05-20 22:37 UTCEPSS rescore
- 2026-05-19 16:33 UTCOSV refresh
- 2026-05-18 21:30 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Metasploit module). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Metasploitauxiliary/scanner/ssl/bleichenbacher_oracle✓ verifiedFirst seen Jun 17, 2009
Scanner for Bleichenbacher Oracle in RSA PKCS #1 v1.5
Open source ↗
Frequently asked(5)
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Dependency Blast Radius
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