CVE-2000-0982: Internet Explorer before 5.5 forwards cached user credentials for a secure web site to insecure pages on the s

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HIGH 7.5WATCHLISTDOWNGRADE

CVE-2000-0982 is a high-severity flaw (CVSS 7.5) affecting internet explorer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Internet Explorer before 5.5 forwards cached user credentials for a secure web site to insecure pages on the same web site, which could allow remote attackers to obtain the credentials by monitoring connections to the web server, aka the "Cached Web Credentials" vulnerability.

Why this priority

High severity
EPSS top 4%: very likely to be exploited
Public exploit reference
On your watchlist

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	12.6% (top 4%)
CISA exploited list	No
Published	2000-12-19
Last modified	2026-09-23

Publisher (CNA): MITRE · Vendor: microsoft

Last updated 2026-09-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2000-12-19 05:00 UTCPublished CVE record published
2026-09-23 10:10 UTCUpdated Record last modified

microsoft internet explorer DOWNGRADE

Affected: 4.0 · 4.0.1 · 4.1 · 5.0 · 5.01

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy internet-explorer || rpm -q internet-explorer || internet-explorer --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison internet-explorer sudo apt install internet-explorer=<VERSION_BEFORE_4.0> sudo apt-mark hold internet-explorer

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

dnf --showduplicates list internet-explorer sudo dnf downgrade internet-explorer-<VERSION_BEFORE_4.0> sudo dnf versionlock add internet-explorer

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-2000-0982?

internet explorer: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2000-0982 being exploited?

CVE-2000-0982 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-2000-0982 affect?

CVE-2000-0982 affects internet explorer. Severity is high (CVSS 7.5). Internet Explorer before 5.5 forwards cached user credentials for a secure web site to insecure pages on the same web site, which could allow remote attackers to obtain the credentials by monitoring connections to the web server, aka the "C

How urgent is CVE-2000-0982?

Priority 60/100. High severity; EPSS top 4%: very likely to be exploited; Public exploit reference; On your watchlist

Software pages

Internet Explorer vulnerabilities

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References

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