CVE-2003-0057: Multiple buffer overflows in Hypermail 2 before 2.1.6 allows remote attackers to cause a denial of service and

This month

HIGH 7.5DOWNGRADE

CVE-2003-0057 is a high-severity flaw (CVSS 7.5) affecting hypermail. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple buffer overflows in Hypermail 2 before 2.1.6 allows remote attackers to cause a denial of service and possibly execute arbitrary code (1) via a long attachment filename that is not properly handled by the hypermail executable, or (2) by connecting to the mail CGI program from an IP address that reverse-resolves to a long hostname.

Why this priority

High severity
EPSS top 8%: very likely to be exploited

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	4.9% (top 8%)
CISA exploited list	No
Published	2003-02-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: hypermail

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

Am I affected?

Timeline

2003-02-19 05:00 UTCPublished CVE record published
2026-06-16 22:01 UTCUpdated Record last modified

hypermail hypermail DOWNGRADE

Affected: 2.0b25 · 2.1.1 · 2.1.2 · 2.1.3 · 2.1.4 · 2.1.5 · 2.1_.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0b25

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.0b25 (Debian / Ubuntu)

apt-cache madison hypermail sudo apt install hypermail=<VERSION_BEFORE_2.0b25> sudo apt-mark hold hypermail

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

dnf --showduplicates list hypermail sudo dnf downgrade hypermail-<VERSION_BEFORE_2.0b25> sudo dnf versionlock add hypermail

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-2003-0057?

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

Is CVE-2003-0057 being exploited?

CVE-2003-0057 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-2003-0057 affect?

CVE-2003-0057 affects hypermail. Severity is high (CVSS 7.5). Multiple buffer overflows in Hypermail 2 before 2.1.6 allows remote attackers to cause a denial of service and possibly execute arbitrary code (1) via a long attachment filename that is not properly handled by the hypermail executable, or (

How urgent is CVE-2003-0057?

Priority 49/100. High severity; EPSS top 8%: very likely to be exploited

Related CVEs

CVE-2010-4339 MEDIUM 4.3 DOWNGRADE Cross-site scripting (XSS) vulnerability in Hypermail 2.2.0 allows remote attackers to inject arbitrary web sc
CVE-2001-0901 HIGH 7.5 MITIGATE Hypermail allows remote attackers to execute arbitrary commands on a server supporting SSI via an attachment w

References

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