How severe is CVE-2011-1977?

CVE-2011-1977 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-1977 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1977?

CVE-2011-1977 primarily affects Microsoft .net Framework. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1977?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1977 published?

CVE-2011-1977 was published on 2011-08-10 and last updated on 2026-06-16.

CVE-2011-1977

CVE-2011-1977 is a medium-severity vulnerability in Microsoft .net Framework with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 21% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 21% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft .net Framework
Published: 2011-08-10
Last modified: 2026-06-16

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."

Frequently asked questions

What is CVE-2011-1977?: 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."
How severe is CVE-2011-1977?: CVE-2011-1977 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-1977 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 21% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1977?: CVE-2011-1977 primarily affects Microsoft .net Framework. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1977?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-1977 published?: CVE-2011-1977 was published on 2011-08-10 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:microsoft:.net_framework:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:chart_control_for_microsoft_.net_framework:3.5:sp1:*:*:*:*:*:*

More vulnerabilities in Microsoft .net Framework

CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-4073 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 processes unverified data during interaction…
CVE-2014-1806 — Critical (CVSS 10.0): The .NET Remoting implementation in Microsoft .NET Framework 1.1 SP1, 2.0 SP2, 3.5, 3.5.1, 4, 4.5, and 4.5.1 does not…
CVE-2013-0073 — Critical (CVSS 10.0): The Windows Forms (aka WinForms) component in Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not…
CVE-2008-5100 — Critical (CVSS 10.0): The strong name (SN) implementation in Microsoft .NET Framework 2.0.50727 relies on the digital signature Public Key…
CVE-2002-0369 — Critical (CVSS 10.0): Buffer overflow in ASP.NET Worker Process allows remote attackers to cause a denial of service (restart) and possibly…

All CVEs affecting Microsoft .net Framework →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →