CVE-2016-4979
moderate-risk
Published 2016-07-06
The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.
Do I need to act?
!
17.4% chance of exploitation in next 30 days
EPSS score — higher than 83% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (3)
Affected Vendors
References (50)
and 30 more references
48
/ 100
moderate-risk
Severity
26/34 · High
Exploitability
13/34 · Low
Exposure
9/34 · Low