CVE-2001-0365: Eudora before 5.1 allows a remote attacker to execute arbitrary code, when the 'Use Microsoft Viewer' and 'all

Q: How do I fix CVE-2001-0365?

eudora: upgrade to newer than 5.1. Exact commands for each OS are on this page.

Q: Is CVE-2001-0365 being exploited?

CVE-2001-0365 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2001-0365 affect?

CVE-2001-0365 affects eudora. Severity is high (CVSS 7.5). Eudora before 5.1 allows a remote attacker to execute arbitrary code, when the 'Use Microsoft Viewer' and 'allow executables in HTML content' options are enabled, via an HTML email message containing Javascript, with ActiveX controls and ma

Q: How urgent is CVE-2001-0365?

Priority 58/100. High severity; Public exploit reference; On your watchlist

This month

HIGH 7.5WATCHLISTUPGRADE

CVE-2001-0365 is a high-severity flaw (CVSS 7.5) affecting eudora. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Eudora before 5.1 allows a remote attacker to execute arbitrary code, when the 'Use Microsoft Viewer' and 'allow executables in HTML content' options are enabled, via an HTML email message containing Javascript, with ActiveX controls and malicious code within IMG tags.

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.2% (top 12%)
CISA exploited list	No
Published	2001-06-27
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: qualcomm

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

Am I affected?

Timeline

2001-06-27 04:00 UTCPublished CVE record published
2026-06-16 21:54 UTCUpdated Record last modified

qualcomm eudora UPGRADE

Affected: <= 5.1 · 5.0.2

Fixed in: newer than 5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade eudora

Note

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

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Qualcomm Eudora 5.0.2 - 'Use Microsoft Viewer' Code Execution

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-2001-0365?

eudora: upgrade to newer than 5.1. Exact commands for each OS are on this page.

Is CVE-2001-0365 being exploited?

CVE-2001-0365 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-2001-0365 affect?

CVE-2001-0365 affects eudora. Severity is high (CVSS 7.5). Eudora before 5.1 allows a remote attacker to execute arbitrary code, when the 'Use Microsoft Viewer' and 'allow executables in HTML content' options are enabled, via an HTML email message containing Javascript, with ActiveX controls and ma

How urgent is CVE-2001-0365?

Priority 58/100. High severity; Public exploit reference; On your watchlist

Software pages

Qualcomm vulnerabilities

Related CVEs

CVE-2007-3166 MEDIUM 6.8 DOWNGRADE Buffer overflow in Qualcomm Eudora 7.1.0.9 allows user-assisted, remote IMAP servers to execute arbitrary code
CVE-2007-2770 HIGH 9.3 DOWNGRADE Stack-based buffer overflow in Eudora 7.1 allows user-assisted, remote SMTP servers to execute arbitrary code
CVE-2004-2649 MEDIUM 5.8 DOWNGRADE Eudora 6.1.0.6 allows remote attackers to obfuscate URLs displayed in the status bar by inserting a large numb
CVE-2004-2005 MEDIUM 5.1 DOWNGRADE Buffer overflow in Eudora for Windows 5.2.1, 6.0.3, and 6.1 allows remote attackers to execute arbitrary code
CVE-2004-1944 MEDIUM 5.0 DOWNGRADE Eudora 6.1 and 6.0.3 for Windows allows remote attackers to cause a denial of service (crash) via a deeply nes

References

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