Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier…
Priority HIGH 70Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Integer overflow in the TCP stream reassembly module (stream4) for Snort 2.0 and earlier allows remote attackers to execute arbitrary code via large sequence numbers in packets, which enable a heap-based buffer overflow.
Why it matters now
EPSS 0.38625 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:smoothwall:smoothwall:2.0_beta_4:*:*:*:*:*:*:* | 2.0_beta_4 | Vulnerable | Smoothwall |
| cpe:2.3:a:sourcefire:snort:1.8:*:*:*:*:*:*:* | 1.8 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.1:*:*:*:*:*:*:* | 1.8.1 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.2:*:*:*:*:*:*:* | 1.8.2 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.3:*:*:*:*:*:*:* | 1.8.3 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.4:*:*:*:*:*:*:* | 1.8.4 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.5:*:*:*:*:*:*:* | 1.8.5 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.6:*:*:*:*:*:*:* | 1.8.6 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.8.7:*:*:*:*:*:*:* | 1.8.7 | Vulnerable | Sourcefire |
| cpe:2.3:a:sourcefire:snort:1.9:*:*:*:*:*:*:* | 1.9 | Vulnerable | Sourcefire |
- cpe:2.3:a:smoothwall:smoothwall:2.0_beta_4:*:*:*:*:*:*:* Versions 2.0_beta_4 Vulnerable ·Smoothwall
- cpe:2.3:a:sourcefire:snort:1.8:*:*:*:*:*:*:* Versions 1.8 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.1:*:*:*:*:*:*:* Versions 1.8.1 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.2:*:*:*:*:*:*:* Versions 1.8.2 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.3:*:*:*:*:*:*:* Versions 1.8.3 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.4:*:*:*:*:*:*:* Versions 1.8.4 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.5:*:*:*:*:*:*:* Versions 1.8.5 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.6:*:*:*:*:*:*:* Versions 1.8.6 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.8.7:*:*:*:*:*:*:* Versions 1.8.7 Vulnerable ·Sourcefire
- cpe:2.3:a:sourcefire:snort:1.9:*:*:*:*:*:*:* Versions 1.9 Vulnerable ·Sourcefire
Show 1 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sourcefire:snort:1.9.1:*:*:*:*:*:*:* | 1.9.1 | Vulnerable | Sourcefire |
- cpe:2.3:a:sourcefire:snort:1.9.1:*:*:*:*:*:*:* Versions 1.9.1 Vulnerable ·Sourcefire
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0209
- 2026-10-03 Alias added: GHSA-hp46-mhrx-cx3g
References
Sources
- CVE-2003-0209 · CVE Program
- CVE-2003-0209 · NVD
- FIRST EPSS
- GHSA-hp46-mhrx-cx3g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences