What is CVE-2021-27565?

CVE-2021-27565 is a high-severity vulnerability in Hcc-Embedded Nichestack, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2021-08-19.

How severe is CVE-2021-27565?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Hcc-Embedded Nichestack

CVE-2021-27565

The web server in InterNiche NicheStack through 4.0.1 allows remote attackers to cause a denial of service (infinite loop and networking outage) via an unexpected valid HTTP request such as OPTIONS. This occurs because the HTTP request handler enters a miscoded wbs_loop() debugger hook.

EPSS: 0.026 (83.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Hcc-embedded Nichestack
N/a — versions n/a

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

cve@mitre.org (Product, x_refsource_MISC)
cve@mitre.org (Product, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Mitigation)
cve@mitre.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2021-27565?: CVE-2021-27565 is a high-severity vulnerability in Hcc-Embedded Nichestack, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2021-08-19.
How severe is CVE-2021-27565?: High severity. CVSS v3 base score is 7.5 out of 10.