CVE-2021-32454: SITEL CAP/PRX firmware version 5.2.01 makes use of a hardcoded password

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CRITICAL 9.6MITIGATE

CVE-2021-32454 is a critical-severity flaw (CVSS 9.6) affecting remote cap\/prx firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SITEL CAP/PRX firmware version 5.2.01 makes use of a hardcoded password. An attacker with access to the device could modify these credentials, leaving the administrators of the device without access.

Why this priority

Critical severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-798
Published	2021-05-17
Last modified	2026-06-17

Publisher (CNA): Spanish National Cybersecurity Institute, S.A. (INCIBE) · Vendor: sitel-sa

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-17 18:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

sitel-sa remote cap\/prx firmware MITIGATE

Affected: 5.2.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.2.01

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32454?

remote cap\/prx firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-32454 being exploited?

CVE-2021-32454 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32454 affect?

CVE-2021-32454 affects remote cap\/prx firmware. Severity is critical (CVSS 9.6). SITEL CAP/PRX firmware version 5.2.01 makes use of a hardcoded password. An attacker with access to the device could modify these credentials, leaving the administrators of the device without access.

How urgent is CVE-2021-32454?

Priority 42/100. Critical severity

Related CVEs

CVE-2021-32456 MEDIUM 6.5 MITIGATE SITEL CAP/PRX firmware version 5.2.01 allows an attacker with access to the local network of the device to obt

References

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