CVE-1999-1551
MediumPublic exploitBuffer overflow in Ipswitch IMail Service 5.0 allows an attacker to cause a denial of service (crash) and possibly execute arbitrary commands via a long URL.
Published Mar 2, 1999 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-1999-1551 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Imail (Ipswitch).
- 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
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
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-1999-1551 brief as a PDF
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Description
Buffer overflow in Ipswitch IMail Service 5.0 allows an attacker to cause a denial of service (crash) and possibly execute arbitrary commands via a long URL.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| ImailIpswitch | 5.0, 6.0 | n/a |
Timeline
Publicly disclosed
Mar 2, 1999
Last updated
Apr 15, 2026
References
- patch505
- exploitExploitDB-19380
- other19990302 Multiple IMail Vulnerabilites
- otherimail-websvc-overflow(1898)
FAQ
Common Questions.
Buffer overflow in Ipswitch IMail Service 5.0 allows an attacker to cause a denial of service (crash) and possibly execute arbitrary commands via a long URL.
Affected: Imail (Ipswitch) versions 5.0, 6.0. 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.
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