CVE-2016-4975

high-risk
Published 2018-08-14

Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache HTTP Server 2.4.25 (Affected 2.4.1-2.4.23). Fixed in Apache HTTP Server 2.2.32 (Affected 2.2.0-2.2.31).

Do I need to act?

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73.3% chance of exploitation in next 30 days
EPSS score — higher than 27% of all CVEs
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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
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Vendors

References (48)

and 28 more references
66
/ 100
high-risk
Severity 23/34 · High
Exploitability 19/34 · Moderate
Exposure 24/34 · High