CVE-2007-1675
CriticalExploitedPublic exploitBuffer overflow in the CRAM-MD5 authentication mechanism in the IMAP server (nimap.exe) in IBM Lotus Domino before 6.5.6 and 7.x before 7.0.2 FP1 allows remote attackers to cause a denial of service via a long username.
Published Mar 28, 2007 · Updated Apr 22, 2026
Key Facts
Patch immediately- CVE-2007-1675 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Lotus Domino (Ibm).
- It is exploited in the wild, listed in Industry KEV feed since Jun 20, 2017. Public exploit code is available.
- EPSS estimates a 61% 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 listed as exploited in the wild.
CVSS v2
10.0
AV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS (30-day exploit likelihood)
61%
Higher than 99.1% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2007-1675 brief as a PDF
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Description
Buffer overflow in the CRAM-MD5 authentication mechanism in the IMAP server (nimap.exe) in IBM Lotus Domino before 6.5.6 and 7.x before 7.0.2 FP1 allows remote attackers to cause a denial of service via a long username.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Jun 20, 2017 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
13 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Lotus DominoIbm | 6.5.0, 6.5.1, 6.5.2, 6.5.3, 6.5.4, 6.5.5, 7.0, 7.0.1 | n/a |
Timeline
Publicly disclosed
Mar 28, 2007
Added to Industry KEV feed
Jun 20, 2017
Last updated
Apr 22, 2026
References
- advisory24633
- patchhttp://www-1.ibm.com/support/docview.wss?uid=swg21257028
- patch23173
- exploitVulnCheck exploitation report
- exploitExploitDB-3602
FAQ
Common Questions.
Buffer overflow in the CRAM-MD5 authentication mechanism in the IMAP server (nimap.exe) in IBM Lotus Domino before 6.5.6 and 7.x before 7.0.2 FP1 allows remote attackers to cause a denial of service via a long username.
Affected: Lotus Domino (Ibm) versions 6.5.0, 6.5.1, 6.5.2, 6.5.3, 6.5.4, 6.5.5, 7.0, 7.0.1. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Jun 20, 2017.
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 listed as exploited in the wild.
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