Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response
Published Apr 2, 2003
7.5
HIGHCVSS 2.0
EPSS 20.26%
Description
Buffer overflow in Internet Mail Connector (IMC) for Microsoft Exchange Server 5.5 allows remote attackers to execute arbitrary code via an EHLO request from a system with a long name as obtained through a reverse DNS lookup, which triggers the overflow in IMC's hello response.
Affected products
No data.
- 5.5
- 5.5
- 5.5
- 5.5
- 5.5
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 20.26% (0.20257) | 97.40th | v5 (v2026.06.15) |
| Jun 15, 2026 | 20.26% (0.20257) | 97.13th | v5 (v2026.06.15) |
| Mar 30, 2025 | 17.12% (0.17116) | 94.45th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.16% (0.22163) | 93.18th | v4 (v2025.03.14) |
| Mar 19, 2025 | 17.12% (0.17116) | 94.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 13.35% (0.13354) | 93.63th | v4 (v2025.03.14) |
| Dec 17, 2024 | 11.05% (0.11049) | 95.12th | v3 (v2023.03.01) |
| Nov 8, 2023 | 5.47% (0.05470) | 92.37th | v3 (v2023.03.01) |
| Sep 11, 2023 | 7.54% (0.07543) | 93.31th | v3 (v2023.03.01) |
| Apr 17, 2023 | 5.96% (0.05956) | 92.33th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.08% (0.05077) | 91.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 33.70% (0.33695) | 97.67th | v2 (v2022.01.01) |
| Feb 4, 2022 | 33.70% (0.33695) | 96.63th | v2 (v2022.01.01) |
References (5)
- http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20759 third-party-advisoryx_refsource_ISSBroken Link
- http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ326322 vendor-advisoryx_refsource_MSKB
- http://www.iss.net/security_center/static/9658.php vdb-entryx_refsource_XFBroken Link
- http://www.securityfocus.com/bid/5306 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-037 vendor-advisoryx_refsource_MSPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20759 | third-party-advisoryx_refsource_ISSBroken Link | |
| http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ326322 | vendor-advisoryx_refsource_MSKB | |
| http://www.iss.net/security_center/static/9658.php | vdb-entryx_refsource_XFBroken Link | |
| http://www.securityfocus.com/bid/5306 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-037 | vendor-advisoryx_refsource_MSPatchVendor Advisory |
Change history (0)
No recorded changes yet.