Is CVE-2018-1312 being actively exploited?

CVE-2018-1312 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-1312?

CVE-2018-1312 has a CVSS 3.1 base score of 9.8 (CRITICAL).

CVE-2018-1312

CRITICAL · CVSS 9.8EPSS 15.7%EU EUVD

In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.

Key facts

CVSS score: 9.8 (v3.1)
Severity: CRITICAL
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-287
EPSS score: 15.7% (97th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-11913)
Published: March 26, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-11913 in the EU Vulnerability Database. Last updated in EUVD on September 16, 2024.

View on the EU Vulnerability Database

Affected products

apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
apache / http server
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
debian / debian linux
debian / debian linux
debian / debian linux
netapp / cloud backup
netapp / clustered data ontap
netapp / storagegrid
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux desktop
redhat / enterprise linux eus
redhat / enterprise linux server
redhat / enterprise linux server aus
redhat / enterprise linux server tus
redhat / enterprise linux workstation
redhat / jboss core services

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Red Hat Enterprise Linux 7.6 - Red Hat, Inc. - Common Criteria CCEVS-VR-VID-11039-2020 - archived

References

http://www.openwall.com/lists/oss-security/2018/03/24/7(Mailing List, Third Party Advisory)
http://www.securityfocus.com/bid/103524(Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id/1040571(Broken Link, Third Party Advisory, VDB Entry)
https://access.redhat.com/errata/RHSA-2018:3558(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:0366(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:0367(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:1898(Third Party Advisory)
https://httpd.apache.org/security/vulnerabilities_24.html(Vendor Advisory)
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/re473305a65b4db888e3556e4dae10c2a04ee89dcff2e26ecdbd860a9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E
https://lists.debian.org/debian-lts-announce/2018/05/msg00020.html(Mailing List, Third Party Advisory)
https://security.netapp.com/advisory/ntap-20180601-0004/(Third Party Advisory)
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us(Third Party Advisory)
https://usn.ubuntu.com/3627-1/(Third Party Advisory)
https://usn.ubuntu.com/3627-2/(Third Party Advisory)
https://usn.ubuntu.com/3937-2/(Third Party Advisory)
https://www.debian.org/security/2018/dsa-4164(Third Party Advisory)
https://www.tenable.com/security/tns-2019-09(Third Party Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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