Is CVE-2018-20615 being actively exploited?

CVE-2018-20615 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2018-20615?

CVE-2018-20615 has a CVSS 3.0 base score of 7.5 (HIGH).

CVE-2018-20615

HIGH · CVSS 7.5EPSS 4.5%EU EUVD

An out-of-bounds read issue was discovered in the HTTP/2 protocol decoder in HAProxy 1.8.x and 1.9.x through 1.9.0 which can result in a crash. The processing of the PRIORITY flag in a HEADERS frame requires 5 extra bytes, and while these bytes are skipped, the total frame length was not re-checked to make sure they were present in the frame.

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: 4.5% (91th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2018-13166)
Published: March 21, 2019
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2018-13166 in the EU Vulnerability Database. Last updated in EUVD on August 5, 2024.

View on the EU Vulnerability Database

Affected products

canonical / ubuntu linux
canonical / ubuntu linux
canonical / ubuntu linux
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
haproxy / haproxy
opensuse / leap
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
redhat / enterprise linux
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

http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00018.html(Mailing List, Third Party Advisory)
http://www.securityfocus.com/bid/106645(Third Party Advisory, VDB Entry)
https://access.redhat.com/errata/RHBA-2019:0327(Third Party Advisory)
https://access.redhat.com/errata/RHSA-2019:0275(Third Party Advisory)
https://usn.ubuntu.com/3858-1/(Third Party Advisory)
https://www.mail-archive.com/haproxy%40formilux.org/msg32304.html

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

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