What is CVE-2021-32455?

CVE-2021-32455 is a medium-severity vulnerability in Sitel Cap/prx, classified under Uncontrolled Resource Consumption. CVSS score: 6.8/10. Published 2021-05-17.

How severe is CVE-2021-32455?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Resource exhaustion in Sitel Cap/prx

CVE-2021-32455

SITEL CAP/PRX firmware version 5.2.01, allows an attacker with access to the device´s network to cause a denial of service condition on the device. An attacker could exploit this vulnerability by sending HTTP requests massively.

Vulnerability class: DoS (Denial of Service)

Published 2021-05-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.004 (27.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Sitel Cap/prx — versions 5.2.01
Sitel-Sa Cap\/prx
Sitel-Sa Cap\/prx Firmware — versions 5.2.01

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.incibe-cert.es/en/early-warning/ics-advisories/sitel-capprx-vulnerable-deni… (Third Party Advisory)

Frequently asked questions

What is CVE-2021-32455?: CVE-2021-32455 is a medium-severity vulnerability in Sitel Cap/prx, classified under Uncontrolled Resource Consumption. CVSS score: 6.8/10. Published 2021-05-17.
How severe is CVE-2021-32455?: Medium severity. CVSS v3 base score is 6.8 out of 10.