CVE-2007-1579: Stack-based buffer overflow in Atrium MERCUR IMAPD allows remote attackers to have an unknown impact via a cer

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HIGH 10.0MITIGATEDOWNGRADE

CVE-2007-1579 is a high-severity flaw (CVSS 10.0) affecting mercur imapd, mercur messaging 2005. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in Atrium MERCUR IMAPD allows remote attackers to have an unknown impact via a certain SUBSCRIBE command.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	57.3% (top 1%)
CISA exploited list	No
Weakness	CWE-119
Published	2007-03-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: atrium software

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

Am I affected?

Timeline

2007-03-21 23:19 UTCPublished CVE record published
2026-06-16 22:37 UTCUpdated Record last modified

atrium software mercur imapd MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mercur-imapd || rpm -q mercur-imapd || mercur-imapd --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

atrium software mercur messaging 2005 DOWNGRADE

Affected: 5.0_sp3 · sp4

Fixed in: no fixed release known

Safe to downgrade to: a release before 5.0_sp3

1. Check installed version

apt-cache policy mercur-messaging-2005 || rpm -q mercur-messaging-2005 || mercur-messaging-2005 --version

2. No fixed release: DOWNGRADE to a release before 5.0_sp3 (Debian / Ubuntu)

apt-cache madison mercur-messaging-2005 sudo apt install mercur-messaging-2005=<VERSION_BEFORE_5.0_sp3> sudo apt-mark hold mercur-messaging-2005

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

dnf --showduplicates list mercur-messaging-2005 sudo dnf downgrade mercur-messaging-2005-<VERSION_BEFORE_5.0_sp3> sudo dnf versionlock add mercur-messaging-2005

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.

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: Mercur Messaging 2005 (Windows 2000 SP4) - IMAP 'Subscribe' Remote Overflow

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-2007-1579?

mercur imapd: mitigate or apply the listed mitigation; mercur messaging 2005: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2007-1579 being exploited?

CVE-2007-1579 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-2007-1579 affect?

CVE-2007-1579 affects mercur imapd, mercur messaging 2005. Severity is high (CVSS 10.0). Stack-based buffer overflow in Atrium MERCUR IMAPD allows remote attackers to have an unknown impact via a certain SUBSCRIBE command.

How urgent is CVE-2007-1579?

Priority 65/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2007-1578 HIGH 10.0 DOWNGRADE Multiple integer signedness errors in the NTLM implementation in Atrium MERCUR IMAPD (mcrimap4.exe) 5.00.14, w

References

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