CVE-2002-0757: (1) Webmin 0.96 and (2) Usermin 0.90 with password timeouts enabled allow local and possibly remote attackers

This month

HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2002-0757 is a high-severity flaw (CVSS 7.5) affecting usermin, webmin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

(1) Webmin 0.96 and (2) Usermin 0.90 with password timeouts enabled allow local and possibly remote attackers to bypass authentication and gain privileges via certain control characters in the authentication information, which can force Webmin or Usermin to accept arbitrary username/session ID combinations.

Why this priority

High severity
Public exploit reference

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	1.9% (top 21%)
CISA exploited list	No
Published	2002-08-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: usermin · webmin

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2002-08-12 04:00 UTCPublished CVE record published
2026-06-16 21:58 UTCUpdated Record last modified

usermin usermin DOWNGRADE

Affected: 0.7 · 0.8 · 0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.7

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.7 (Debian / Ubuntu)

apt-cache madison usermin sudo apt install usermin=<VERSION_BEFORE_0.7> sudo apt-mark hold usermin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list usermin sudo dnf downgrade usermin-<VERSION_BEFORE_0.7> sudo dnf versionlock add usermin

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.

webmin webmin DOWNGRADE

Affected: 0.91 · 0.92 · 0.92.1 · 0.93 · 0.94 · 0.95 · 0.96

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.91

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.91 (Debian / Ubuntu)

apt-cache madison webmin sudo apt install webmin=<VERSION_BEFORE_0.91> sudo apt-mark hold webmin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list webmin sudo dnf downgrade webmin-<VERSION_BEFORE_0.91> sudo dnf versionlock add webmin

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-2002-0757?

usermin: downgrade or apply the listed mitigation; webmin: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-0757 being exploited?

CVE-2002-0757 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-2002-0757 affect?

CVE-2002-0757 affects usermin, webmin. Severity is high (CVSS 7.5). (1) Webmin 0.96 and (2) Usermin 0.90 with password timeouts enabled allow local and possibly remote attackers to bypass authentication and gain privileges via certain control characters in the authentication information, which can force Web

How urgent is CVE-2002-0757?

Priority 51/100. High severity; Public exploit reference

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References

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