CVE-2018-5530 json
F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, or 11.6.0-11.6.3.1 virtual servers with HTTP/2 profiles enabled are vulnerable to "HPACK Bomb".
published 2018-07-25 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17299
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
F5 BIG-IP 13.0.0-13.1.0.5, 12.1.0-12.1.3.5, or 11.6.0-11.6.3.1 virtual servers with HTTP/2 profiles enabled are vulnerable to "HPACK Bomb".
Exploit prediction
1.76% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- F5 Networks, Inc. BIG-IP (LTM, AAM, AFM, Analytics, APM, ASM, Edge Gateway, PEM, WebSafe)
Classification
- Weakness
-
- CWE-400 Uncontrolled Resource Consumption
References
-
support.f5.com
/csp/article/K45611803
vendor-advisory
-
securityfocus.com
/bid/104908
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-5530
- NVD CVE-2018-5530
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.