CVE-2021-27233: An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8

Routine

MEDIUM 4.9UPGRADE

CVE-2021-27233 is a medium-severity flaw (CVSS 4.9) affecting voice. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8. On the admin portal of the web application, password information for external systems is visible in cleartext. The Settings.asp page is affected by this issue.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-312
Published	2021-02-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mutare

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

Am I affected?

Timeline

2021-02-16 04:15 UTCPublished CVE record published
2026-06-17 03:44 UTCUpdated Record last modified

mutare voice UPGRADE

Affected: >= 3.0.0 and < 3.3.8

Fixed in: 3.3.8

Safe to downgrade to: a release before 3.0.0

1. Check installed version

apt-cache policy voice || rpm -q voice || voice --version

2. UPGRADE to 3.3.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade voice

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade voice

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 3.0.0 (Debian / Ubuntu)

apt-cache madison voice sudo apt install voice=<VERSION_BEFORE_3.0.0> sudo apt-mark hold voice

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list voice sudo dnf downgrade voice-<VERSION_BEFORE_3.0.0> sudo dnf versionlock add voice

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2021-27233?

voice: upgrade to 3.3.8. Exact commands for each OS are on this page.

Is CVE-2021-27233 being exploited?

CVE-2021-27233 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-2021-27233 affect?

CVE-2021-27233 affects voice. Severity is medium (CVSS 4.9). An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8. On the admin portal of the web application, password information for external systems is visible in cleartext. The Settings.asp page is affected by this issue.

How urgent is CVE-2021-27233?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2021-27236 CRITICAL 9.8 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8
CVE-2021-27235 MEDIUM 4.9 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8
CVE-2021-27234 CRITICAL 9.8 UPGRADE An issue was discovered in Mutare Voice (EVM) 3.x before 3.3.8

References

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