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3804 articles · 153134 vulns · 38/41 feeds (7d)
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7.5
CVE-2026-40629EXPLOITEDPATCHED
f5 · big-ip

BIG-IP SSL/TLS vulnerability

Description

When SSL profiles are configured on a virtual server, undisclosed traffic can cause the virtual server to stop processing new client connections.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected Products

VendorProductVersions
f5big-ip17.5.0, 17.1.0, 16.1.0, 2.0.0, 1.7.0, 2.0.0, 1.1.0, 2.0.0

References

  • https://my.f5.com/manage/s/article/K000158978(vendor-advisory, patch)

Related News (1 articles)

Tier C
VulDB5h ago
CVE-2026-40629 | F5 BIG-IP prior 17.1.3.1/17.5.1.4 allocation of resources (K000158978)
→ No new info (linked only)
CVSS 3.17.5 HIGH
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA KEV❌ No
Actively exploited✅ Yes
Patch available
21.0.017.5.1.417.1.3.1*2.0.31.7.161.4.12.1.1
CWECWE-770
PublishedMay 13, 2026
Last enriched4h agov2
Trending Score56
Source articles1
Independent1
Info Completeness9/14
Missing: epss, kev, exploit, iocs, mitre_attack

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Related CVEs (5)

CRITICALCVE-2026-42945EXP
NGINX ngx_http_rewrite_module vulnerability
Trending: 74
MEDIUMCVE-2026-40701EXP
NGINX ngx_http_ssl_module vulnerability
Trending: 58
MEDIUMCVE-2026-42934EXP
NGINX ngx_http_charset_module vulnerability
Trending: 58
HIGHCVE-2026-40060EXP
BIG-IP Advanced WAF and ASM vulnerability
Trending: 56
HIGHCVE-2026-39455EXP
BIG-IP Configuration utility vulnerability
Trending: 56

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Verification

State: unverified
Confidence: 0%

Vulnerability Timeline

CVE Published
May 13, 2026
Discovered by ZDM
May 13, 2026
Updated: description, severity, activelyExploited
May 13, 2026
Actively Exploited
May 13, 2026
Patch Available
May 13, 2026

Version History

v2
Last enriched 4h ago
v2Tier C4h ago

Updated severity to CRITICAL, marked as actively exploited, and provided a new description with more technical detail.

descriptionseverityactivelyExploited
via VulDB
v15h ago

Initial creation