CVE-2016-4993

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.54% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 84.9% of scored records. A rank, not a probability.

NVD base score

6.1 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2016-09-26 14:00Z10 YR AGO

Last updated

2024-08-06 00:46Z2 YR AGO

Reserved

2016-05-24

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')Base
• CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')Variant

Data version

5.1

Document digest

aed6e232f606e784a6e8d8a0cc94af95fa47f544aee271b74f6d076d6a7a6141

• rhn.redhat.comRHSA-2016:1841http://rhn.redhat.com/errata/RHSA-2016-1841.htmlvendor-advisoryx_refsource_REDHAT
• www.securityfocus.com92894http://www.securityfocus.com/bid/92894vdb-entryx_refsource_BID
• access.redhat.comRHSA-2017:3458https://access.redhat.com/errata/RHSA-2017:3458vendor-advisoryx_refsource_REDHAT
• www.securitytracker.com1036758http://www.securitytracker.com/id/1036758vdb-entryx_refsource_SECTRACK
• rhn.redhat.comRHSA-2016:1838http://rhn.redhat.com/errata/RHSA-2016-1838.htmlvendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2017:3455https://access.redhat.com/errata/RHSA-2017:3455vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2017:3456https://access.redhat.com/errata/RHSA-2017:3456vendor-advisoryx_refsource_REDHAT
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1344321x_refsource_CONFIRM
• access.redhat.comRHSA-2017:3454https://access.redhat.com/errata/RHSA-2017:3454vendor-advisoryx_refsource_REDHAT
• rhn.redhat.comRHSA-2016:1839http://rhn.redhat.com/errata/RHSA-2016-1839.htmlvendor-advisoryx_refsource_REDHAT
• rhn.redhat.comRHSA-2016:1840http://rhn.redhat.com/errata/RHSA-2016-1840.htmlvendor-advisoryx_refsource_REDHAT