CVE-2002-0656
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote...
CVE-2002-0656 is a high vulnerability (CVSS 7.5) in Openssl, published July 30, 2002. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 89.8%, the 99th percentile. Fixed in openssl 0.9.6e-1.
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
Exploit likelihood
What each source reports
NVD Score used
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
CVE-2002-0656- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
CVE-2002-0656- Updated
- 2026-11-02
EUVDEUVD-2002-0650 No score
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
EUVD-2002-0650- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9jw8-9j6r-p392 No score
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote...
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
GHSA-9jw8-9j6r-p392- Updated
- 2026-11-02
OSV No score
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
CVE-2002-0656- Updated
- 2026-11-02
OSVDEBIAN-CVE-2002-0656 No score
Buffer overflows in OpenSSL 0.9.6d and earlier, and 0.9.7-beta2 and earlier, allow remote attackers to execute arbitrary code via (1) a large client master key in SSL2 or (2) a large session ID in SSL3.
- Record
DEBIAN-CVE-2002-0656- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
opensslDebian:12 |
before 0.9.6e-1 | 0.9.6e-1 |
opensslDebian:13 |
before 0.9.6e-1 | 0.9.6e-1 |
opensslDebian:14 |
before 0.9.6e-1 | 0.9.6e-1 |
openssl094Debian:3.0 |
before 0.9.4-6.woody.0, plus listed versions 0.9.4-60.9.4-6.potato.3 |
0.9.4-6.woody.0 |
openssl095Debian:3.0 |
before 0.9.5a-6.woody.0 | 0.9.5a-6.woody.0 |
opensslDebian:3.0 |
before 0.9.6c-2.woody.0 | 0.9.6c-2.woody.0 |
openssl094Debian:3.0 |
before 0.9.4-6.woody.1, plus listed versions 0.9.4-60.9.4-6.potato.3 |
0.9.4-6.woody.1 |
openssl095Debian:3.0 |
before 0.9.5a-6.woody.1 | 0.9.5a-6.woody.1 |
opensslDebian:3.0 |
before 0.9.6c-2.woody.1 | 0.9.6c-2.woody.1 |
openssl094Debian:3.0 |
before 0.9.4-6.woody.2, plus listed versions 0.9.4-60.9.4-6.potato.3 |
0.9.4-6.woody.2 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Apache mod_ssl OpenSSL < 0.9.6d / < 0.9.7-beta2 - 'openssl-too-open.c' SSL2 KEY_ARG Overflow | 2002-09-17 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | affected | |
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |