Is CVE-2018-14645 being actively exploited?

CVE-2018-14645 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-14645?

CVE-2018-14645 has a CVSS 3.0 base score of 7.5 (HIGH).

CVE-2018-14645

HIGH · CVSS 7.5EPSS 3.1%EU EUVD

A flaw was discovered in the HPACK decoder of HAProxy, before 1.8.14, that is used for HTTP/2. An out-of-bounds read access in hpack_valid_idx() resulted in a remote crash and denial of service.

Key facts

CVSS score: 7.5 (v3.0)
Severity: HIGH
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
EPSS score: 3.1% (87th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-6543)
Published: September 21, 2018
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-6543 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
haproxy / haproxy
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
redhat / openshift
redhat / openshift container platform

Certified products that may be affected

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

Red Hat Enterprise Linux 7 NSS Cryptographic Module - Red Hat®, Inc. - FIPS 140 4498 - historical
Red Hat Enterprise Linux 7 Kernel Crypto API Cryptographic Module - Red Hat®, Inc. - FIPS 140 3939 - historical
Red Hat Enterprise Linux 7 OpenSSH Server Cryptographic Module - Red Hat®, Inc. - FIPS 140 3891 - historical
Red Hat Enterprise Linux 7 OpenSSH Client Cryptographic Module - Red Hat®, Inc. - FIPS 140 3892 - historical
Red Hat Enterprise Linux 7 OpenSSL Cryptographic Module - Red Hat®, Inc. - FIPS 140 3867 - historical

See all 8 in the Security Certifications Explorer.

References

https://access.redhat.com/errata/RHBA-2019:0028
https://access.redhat.com/errata/RHSA-2018:2882(Third Party Advisory)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645(Issue Tracking, Mitigation, Third Party Advisory)
https://usn.ubuntu.com/3780-1/(Third Party Advisory)
https://www.mail-archive.com/haproxy%40formilux.org/msg31253.html

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

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