Buffer overflow in CHttpServer::OnParseError in the ISAPI extension (Isapi.cpp) when…
Priority MEDIUM 60Published · 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
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Buffer overflow in CHttpServer::OnParseError in the ISAPI extension (Isapi.cpp) when built using Microsoft Foundation Class (MFC) static libraries in Visual C++ 5.0, and 6.0 before SP3, as used in multiple products including BadBlue, allows remote attackers to cause a denial of service (access violation and crash) and possibly execute arbitrary code via a long query string that causes a parsing error.
Why it matters now
EPSS 0.40046 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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 · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:foundation_class_library:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Microsoft |
| cpe:2.3:a:working_resources_inc.:badblue:personal_1.7.3:*:*:*:*:*:*:* | personal_1.7.3 | Vulnerable | Working Resources Inc. |
- cpe:2.3:a:microsoft:foundation_class_library:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Microsoft
- cpe:2.3:a:working_resources_inc.:badblue:personal_1.7.3:*:*:*:*:*:*:* Versions personal_1.7.3 Vulnerable ·Working Resources Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2002-1973
- 2026-10-03 Alias added: GHSA-qwpw-w2v5-h4cw
References
Sources
- CVE-2002-1973 · CVE Program
- CVE-2002-1973 · NVD
- FIRST EPSS
- GHSA-qwpw-w2v5-h4cw · GitHub Advisory Database · CC BY 4.0
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