CVE-2004-2652
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options...
CVE-2004-2652 is a high vulnerability (CVSS 7.8) in Sourcefire Snort, published December 31, 2004. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.2%, the 95th percentile. No source names a fixed version.
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
Exploit likelihood
What each source reports
NVD Score used
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
- Record
CVE-2004-2652- CVSS 2.0
- 7.8 High
AV:N/AC:L/Au:N/C:N/I:N/A:C - Updated
- 2026-11-02
CVE List No score
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
- Record
CVE-2004-2652- Updated
- 2026-11-02
EUVDEUVD-2004-2642 No score
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
- Record
EUVD-2004-2642- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-ff3x-v55h-wqx3 No score
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options...
The DecodeTCPOptions function in decode.c in Snort before 2.3.0, when printing TCP/IP options using FAST output or verbose mode, allows remote attackers to cause a denial of service (crash) via packets with invalid TCP/IP options, which trigger a null dereference.
- Record
GHSA-ff3x-v55h-wqx3- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Snort 2.1/2.2 - DecodeTCPOptions Remote Denial of Service (1) | 2004-12-22 |
| Exploit-DB | Snort 2.1/2.2 - DecodeTCPOptions Remote Denial of Service (2) | 2004-12-22 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD |
