CVE-2003-1527

Exp

BlackICE Defender 2.9.cap and Server Protection 3.5.cdf, when configured to automatically block attacks, allows remote attackers to block IP addresses and cause a denial of service via spoofed packets.

Published: 2003-12-31 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2003-1527 is rated Exploit Available (55.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.24%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2003-1527

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2003-1527

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 0.92% 1.24% +0.31%
2 2025-08-25 0.60% 0.92% +0.32%
3 2025-03-30 — 0.60% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2003-1527

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2003-1527

Affected software / configurations for CVE-2003-1527

Vendor Product Version Raw CPE
ibm internet_security_systems_blackice_defender 2.9cap cpe:2.3:a:ibm:internet_security_systems_blackice_defender:2.9cap:*:*:*:*:*:*:*
iss blackice_server_protection 3.5.cdf cpe:2.3:a:iss:blackice_server_protection:3.5.cdf:*:*:*:*:*:*:*

References for CVE-2003-1527

cvelogic Threat Intelligence