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CVE-2003-1171

21
FAUCET Score

CVE-2003-1171 describes a heap-based buffer overflow in the sec_filter_out function of mod_security versions 1.7RC1 through 1.7.1 for Apache 2. This vulnerability allows remote attackers to execute arbitrary code by sending a large amount of data via a server-side script. With a CVSS score of 7.5, it is considered highly severe due to its network attack vector, low attack complexity, and potential for full compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.7CPE matchmatch criteria
cpe:2.3:a:mod_security:mod_security:1.7:*:*:*:*:*:*:*
1.7.1CPE matchmatch criteria
cpe:2.3:a:mod_security:mod_security:1.7.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.63%
Probability of exploitation in next 30 days
EPSS Percentile
90.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0462 is in the 84th percentile among its peer group of 51,466 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

adsystems.com.pl / adg-mod_security171.txt
secunia.com / advisories/10085
PatchVendor Advisory
securitytracker.com / id
ExploitPatch
exchange.xforce.ibmcloud.com / vulnerabilities/13543
modsecurity.org / download/CHANGES
securityfocus.com / archive/1/342767
Patch
securityfocus.com / bid/8919
Patch