Which products and versions are affected by CVE-2004-1211?

Affected: Mercury (David Harris) versions 4.0.1a. The full list is in the CVE brief.

Is CVE-2004-1211 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2004-1211 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2004-1211?

Public exploit code is available.

Is there a fix for CVE-2004-1211?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2004-1211 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2004-1211

CriticalPublic exploit

Published Jan 10, 2005 · Updated Apr 15, 2026

Key Facts

Patch immediately

CVE-2004-1211 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Mercury (David Harris).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 72% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

10.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

72%

Higher than 99.4% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2004-1211 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Multiple buffer overflows in the IMAP service in Mercury/32 4.01a allow remote authenticated users to cause a denial of service (application crash) and possibly execute arbitrary code via long arguments to the (1) EXAMINE, (2) SUBSCRIBE, (3) STATUS, (4) APPEND, (5) CHECK, (6) CLOSE, (7) EXPUNGE, (8) FETCH, (9) RENAME, (10) DELETE, (11) LIST, (12) SEARCH, (13) CREATE, or (14) UNSUBSCRIBE commands.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
MercuryDavid Harris	4.0.1a	n/a

Timeline

Publicly disclosed
Jan 10, 2005
Last updated
Apr 15, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

10 more references in the full CVE brief

FAQ

Common Questions.

Multiple buffer overflows in the IMAP service in Mercury/32 4.01a allow remote authenticated users to cause a denial of service (application crash) and possibly execute arbitrary code via long arguments to the (1) EXAMINE, (2) SUBSCRIBE, (3) STATUS, (4) APPEND, (5) CHECK, (6) CLOSE, (7) EXPUNGE, (8) FETCH, (9) RENAME,…
Affected: Mercury (David Harris) versions 4.0.1a. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2004-1211 Running On Your Attack Surface?

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