HIGH
CVE-2018-14645
CWE-125Published: September 21, 2018· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2018-14645 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
ADVISORYhttps://usn.ubuntu.com/3780-1/
ADVISORYhttps://usn.ubuntu.com/3780-1/
All References (10)
→
https://access.redhat.com/errata/RHSA-2018:2882Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645Issue Tracking · Mitigation · Third Party Advisory
→
https://usn.ubuntu.com/3780-1/Third Party Advisory
→
https://access.redhat.com/errata/RHSA-2018:2882Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14645Issue Tracking · Mitigation · Third Party Advisory
→
https://usn.ubuntu.com/3780-1/Third Party Advisory
Quick Facts
CVE IDCVE-2018-14645
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected3 vendor(s)
PublishedSep 21, 2018
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-14645 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.