CVE-2002-0656

NONECVSS 0.0Elevated

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 99.5%
KEV: Not listed

Published

August 12, 2002

Last Modified

April 16, 2026

References (24)

cve@mitreftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.0.txt
cve@mitreftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.1.txt
cve@mitreftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:33.openssl.asc
cve@mitrehttp://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000513
cve@mitrehttp://www.cert.org/advisories/CA-2002-23.html
cve@mitrehttp://www.iss.net/security_center/static/9714.php
cve@mitrehttp://www.iss.net/security_center/static/9716.php
cve@mitrehttp://www.kb.cert.org/vuls/id/102795
cve@mitrehttp://www.kb.cert.org/vuls/id/258555
cve@mitrehttp://www.linux-mandrake.com/en/security/2002/MDKSA-2002-046.php
cve@mitrehttp://www.securityfocus.com/bid/5362
cve@mitrehttp://www.securityfocus.com/bid/5363
af854a3a-2127-422b-91ae-364da2661108ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.0.txt
af854a3a-2127-422b-91ae-364da2661108ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-033.1.txt
af854a3a-2127-422b-91ae-364da2661108ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:33.openssl.asc

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-22 08:52 UTCOSV refresh
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-40347
First seen Sep 17, 2002
Apache mod_ssl OpenSSL < 0.9.6d / < 0.9.7-beta2 - 'openssl-too-open.c' SSL2 KEY_ARG Overflow
Open source ↗

Frequently asked(4)

What is CVE-2002-0656?

CVE-2002-0656 is a none vulnerability published on August 12, 2002. 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.

When was CVE-2002-0656 disclosed?

CVE-2002-0656 was first published in the National Vulnerability Database on August 12, 2002, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2002-0656 actively exploited?

CVE-2002-0656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2002-0656?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2002-0656, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2002-0656

📅 Published

🔄 Last Modified

🔗 References (24)