CVE-2003-0688
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not...
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
Exploit likelihood
What each source reports
NVD Score used
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
CVE-2003-0688- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Updated
- 2026-11-02
CVE ListNo score
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
CVE-2003-0688- Updated
- 2026-11-02
EUVDEUVD-2003-0679No score
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
EUVD-2003-0679- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g82v-vwh4-vpjcNo score
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not...
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
GHSA-g82v-vwh4-vpjc- Updated
- 2026-11-02
OSVNo score
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
CVE-2003-0688- Updated
- 2026-11-02
OSVDEBIAN-CVE-2003-0688No score
The DNS map code in Sendmail 8.12.8 and earlier, when using the "enhdnsbl" feature, does not properly initialize certain data structures, which allows remote attackers to cause a denial of service (process crash) via an invalid DNS response that causes Sendmail to free incorrect data.
- Record
DEBIAN-CVE-2003-0688- Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2003-0688 is a medium vulnerability (CVSS 5.0) in Redhat Sendmail, published September 3, 2003. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.56%, the 89th percentile. Fixed in sendmail 8.12.9.