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CVE-2003-1527

14
FAUCET Score

CVE-2003-1527 describes a denial-of-service vulnerability in BlackICE Defender 2.9.cap and Server Protection 3.5.cdf. When configured for automatic attack blocking, these products can be tricked by remote attackers using spoofed packets to block legitimate IP addresses, leading to service disruption. The vulnerability has a CVSS score of 4.3, indicating a medium attack complexity and partial availability impact, with no confidentiality or integrity impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.9capCPE matchmatch criteria
cpe:2.3:a:ibm:internet_security_systems_blackice_defender:2.9cap:*:*:*:*:*:*:*
3.5.cdfCPE matchmatch criteria
cpe:2.3:a:iss:blackice_server_protection:3.5.cdf:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 42nd percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

online.securityfocus.com / archive/1/294411
iss.net / security_center/static/10314.php
securityfocus.com / bid/5917
Exploit