CVE-2002-1568

OpenSSL 0.9.6e uses assertions when detecting buffer overflow attacks instead of less severe mechanisms, which allows remote attackers to cause a denial of service (crash) via certain messages that cause OpenSSL to abort from a failed assertion, as demonstrated using SSLv2 CLIENT_MASTER_KEY messages, which are not properly handled in s2_srvr.c.

Published: 2003-11-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-1568 is rated Moderate Risk (51.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.73%). EPSS rose +1.64% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2002-1568

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.09% 2.73% +1.64%
2 2025-12-28 0.88% 1.09% +0.21%
3 2025-12-27 — 0.88% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-1568

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2002-1568

OS Trackers for CVE-2002-1568

vendor priority summary link
debian not yet assigned CVE-2002-1568 not yet assigned priority: Debian including 1 source packages (openssl), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2002-1568
redhat high — https://access.redhat.com/security/cve/CVE-2002-1568

Affected software / configurations for CVE-2002-1568

Vendor Product Version Raw CPE
openssl openssl 0.9.6e cpe:2.3:a:openssl:openssl:0.9.6e:*:*:*:*:*:*:*

References for CVE-2002-1568

cvelogic Threat Intelligence