CVE-2006-1255
CriticalPublic exploitStack-based buffer overflow in the IMAP service in Mercur Messaging 5.0 SP3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long string to the (1) LOGIN or (2) SELECT command, a different set of…
Published Mar 18, 2006 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2006-1255 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Mercur Messaging.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 69% probability of exploitation in the next 30 days.
- Fixed versions are available, including Mercur Messaging 2005_5.0_sp3.
- 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)
69%
Higher than 99.3% 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
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Description
Stack-based buffer overflow in the IMAP service in Mercur Messaging 5.0 SP3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long string to the (1) LOGIN or (2) SELECT command, a different set of attack vectors and possibly a different vulnerability than CVE-2003-1177.
Affected Products
1 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Mercur MessagingMercur | See advisory | 2005_5.0_sp3 |
Patched Releases
Mercur Messaging
2005_5.0_sp3
Timeline
Publicly disclosed
Mar 18, 2006
Last updated
Apr 15, 2026
References
- exploit19267
- exploitMSF mercur_imap_select_overflow.rb
- exploitMSF mercur_login.rb
- exploitExploitDB-1592
- exploitExploitDB-16476
FAQ
Common Questions.
Stack-based buffer overflow in the IMAP service in Mercur Messaging 5.0 SP3 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a long string to the (1) LOGIN or (2) SELECT command, a different set of attack vectors and possibly a different vulne…
Affected: Mercur Messaging. 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.
Fixed versions are available, including Mercur Messaging 2005_5.0_sp3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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