Cyber Resilience

CVE-2025-11230

HighDDoS

Published: 19 November 2025

Published
19 November 2025
Modified
19 December 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0047 64.9th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-11230 is a high-severity Inefficient Algorithmic Complexity (CWE-407) vulnerability in Haproxy Haproxy Enterprise. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 35.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

CWE(s)
CWE-407

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

haproxy
aloha appliance
14.5.0 — 14.5.33 · 15.5.0 — 15.5.28 · 16.5.0 — 16.5.19
haproxy
haproxy
2.4.0 — 2.4.30 · 2.6.0 — 2.6.23 · 2.8.0 — 2.8.16
haproxy
haproxy enterprise
2.4r1, 2.6r1, 2.8r1, 3.0r1, 3.1r1
haproxy
kubernetes ingress controller
≤ 1.9.14-ee7 · ≤ 3.1.12 · 1.10.10-ee1 — 1.11.12-ee10

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-5 Denial-of-service Protection
addresses: CWE-407

Addresses inefficient algorithms whose complexity can be exploited for DoS.

References