Is CVE-2011-1977 in the CISA KEV catalog?

No. CVE-2011-1977 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-1977?

CVE-2011-1977 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2011-1977?

CVE-2011-1977 has an EPSS score of 21.37% (97th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2011-1977

MEDIUMEPSS 97th pctl

4.3

CVSS v2

NVD

Description

The ASP.NET Chart controls in Microsoft .NET Framework 4, and Chart Control for Microsoft .NET Framework 3.5 SP1, do not properly verify functions in URIs, which allows remote attackers to read arbitrary files via special characters in a URI in an HTTP request, aka "Chart Control Information Disclosure Vulnerability."

CWE-200Information Exposure

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

21.37%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.