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CVE-2005-0509

21
FAUCET Score

CVE-2005-0509 describes multiple cross-site scripting (XSS) vulnerabilities in the Mono 1.0.5 implementation of ASP.NET. Attackers can inject malicious HTML or web script by using Unicode fullwidth characters that are then converted to normal ASCII characters like "<" and ">". This vulnerability has a CVSS score of 4.3, indicating a medium severity due to its network-based attack vector and medium attack complexity, potentially leading to information disclosure (impact on integrity). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.0:*:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.0:sp1:*:*:*:*:*:*
1.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.0:sp2:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.1:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:1.1:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

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

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

Exploit Intelligence

EPSS Score
15.95%
Probability of exploitation in next 30 days
EPSS Percentile
96.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.1595 is in the 97th percentile among its peer group of 19,958 CVEs.

Social Chatter

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

it-project.ru / andir/docs/aspxvuln/aspxvuln.en.xml
marc.info
secunia.com / advisories/14325
PatchVendor Advisory