CVE-2002-0507

An interaction between Microsoft Outlook Web Access (OWA) with RSA SecurID allows local users to bypass the SecurID authentication for a previous user via several submissions of an OWA Authentication request with the proper OWA password for the previous user, which is eventually accepted by OWA.

Published: 2002-08-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2002-0507 is rated Low Risk (37.7/100): CVSS Low severity, with medium exploitation likelihood (EPSS 2.22%). EPSS rose +1.23% over the last day, indicating growing attacker interest. Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2002-0507

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 0.99% 2.22% +1.23%
2 2026-01-01 1.34% 0.99% -0.35%
3 2025-12-28 — 1.34% —

Full EPSS history (17 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2002-0507

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.1 2.0 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:L)
Requires local access to the target system.
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:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 3.9 2.9 [email protected]

Weakness enumeration for CVE-2002-0507

Affected software / configurations for CVE-2002-0507

Vendor Product Version Raw CPE
microsoft exchange_server 5.5 cpe:2.3:a:microsoft:exchange_server:5.5:-:*:*:*:*:*:*
microsoft exchange_server 5.5 cpe:2.3:a:microsoft:exchange_server:5.5:sp1:*:*:*:*:*:*
microsoft exchange_server 5.5 cpe:2.3:a:microsoft:exchange_server:5.5:sp2:*:*:*:*:*:*
microsoft exchange_server 5.5 cpe:2.3:a:microsoft:exchange_server:5.5:sp3:*:*:*:*:*:*
microsoft exchange_server 5.5 cpe:2.3:a:microsoft:exchange_server:5.5:sp4:*:*:*:*:*:*
microsoft exchange_server 2000 cpe:2.3:a:microsoft:exchange_server:2000:-:*:*:*:*:*:*
microsoft exchange_server 2000 cpe:2.3:a:microsoft:exchange_server:2000:sp1:*:*:*:*:*:*
microsoft exchange_server 2000 cpe:2.3:a:microsoft:exchange_server:2000:sp2:*:*:*:*:*:*
rsa securid 5.0 cpe:2.3:h:rsa:securid:5.0:*:*:*:*:*:*:*

References for CVE-2002-0507

URL Tags
http://online.securityfocus.com/archive/1/264705 Third Party Advisory VDB Entry Vendor Advisory
http://www.iss.net/security_center/static/8681.php Vendor Advisory
http://www.securityfocus.com/bid/4390 Third Party Advisory VDB Entry Vendor Advisory
cvelogic Threat Intelligence