CVE-2005-2127

CVE-2005-2127 is a high-severity vulnerability in Microsoft .net Framework with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 64% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

• Severity: High (CVSS 2.0 base score 7.5)
• EPSS exploit prediction: 64% (99th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Microsoft .net Framework
• Published: 2005-08-19
• Last modified: 2026-06-16

Description

Microsoft Internet Explorer 5.01, 5.5, and 6 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a web page with embedded CLSIDs that reference certain COM objects that are not intended for use within Internet Explorer, as originally demonstrated using the (1) DDS Library Shape Control (Msdds.dll) COM object, and other objects including (2) Blnmgrps.dll, (3) Ciodm.dll, (4) Comsvcs.dll, (5) Danim.dll, (6) Htmlmarq.ocx, (7) Mdt2dd.dll (as demonstrated using a heap corruption attack with uninitialized memory), (8) Mdt2qd.dll, (9) Mpg4ds32.ax, (10) Msadds32.ax, (11) Msb1esen.dll, (12) Msb1fren.dll, (13) Msb1geen.dll, (14) Msdtctm.dll, (15) Mshtml.dll, (16) Msoeacct.dll, (17) Msosvfbr.dll, (18) Mswcrun.dll, (19) Netshell.dll, (20) Ole2disp.dll, (21) Outllib.dll, (22) Psisdecd.dll, (23) Qdvd.dll, (24) Repodbc.dll, (25) Shdocvw.dll, (26) Shell32.dll, (27) Soa.dll, (28) Srchui.dll, (29) Stobject.dll, (30) Vdt70.dll, (31) Vmhelper.dll, and (32) Wbemads.dll, aka a variant of the "COM Object Instantiation Memory Corruption vulnerability."

Frequently asked questions

What is CVE-2005-2127?

Microsoft Internet Explorer 5.01, 5.5, and 6 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a web page with embedded CLSIDs that reference certain COM objects that are not intended for use within Internet Explorer, as originally demonstrated using the (1) DDS Library Shape Control (Msdds.dll) COM object, and other objects including (2) Blnmgrps.dll, (3) Ciodm.dll, (4) Comsvcs.dll, (5) Danim.dll, (6) Htmlmarq.ocx, (7) Mdt2dd.dll (as demonstrated using a heap corruption attack with uninitialized memory), (8) Mdt2qd.dll, (9) Mpg4ds32.ax, (10) Msadds32.ax, (11) Msb1esen.dll, (12) Msb1fren.dll, (13) Msb1geen.dll, (14) Msdtctm.dll, (15) Mshtml.dll, (16) Msoeacct.dll, (17) Msosvfbr.dll, (18) Mswcrun.dll, (19) Netshell.dll, (20) Ole2disp.dll, (21) Outllib.dll, (22) Psisdecd.dll, (23) Qdvd.dll, (24) Repodbc.dll, (25) Shdocvw.dll, (26) Shell32.dll, (27) Soa.dll, (28) Srchui.dll, (29) Stobject.dll, (30) Vdt70.dll, (31) Vmhelper.dll, and (32) Wbemads.dll, aka a variant of the "COM Object Instantiation Memory Corruption vulnerability."

How severe is CVE-2005-2127?

CVE-2005-2127 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-2127 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 64% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-2127?

CVE-2005-2127 primarily affects Microsoft .net Framework. In total, 41 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-2127?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2005-2127 published?

CVE-2005-2127 was published on 2005-08-19 and last updated on 2026-06-16.

References

• http://isc.sans.org/diary.php?date=2005-08-18
• http://secunia.com/advisories/16480
• http://secunia.com/advisories/17172
• http://secunia.com/advisories/17223
• http://secunia.com/advisories/17509
• http://securityreason.com/securityalert/72
• http://securitytracker.com/id?1014727
• http://support.avaya.com/elmodocs2/security/ASA-2005-214.pdf
• http://www.kb.cert.org/vuls/id/740372
• http://www.kb.cert.org/vuls/id/898241
• http://www.kb.cert.org/vuls/id/959049
• http://www.microsoft.com/technet/security/advisory/906267.mspx
• http://www.securityfocus.com/archive/1/470690/100/0/threaded
• http://www.securityfocus.com/bid/14594
• http://www.securityfocus.com/bid/15061
• http://www.us-cert.gov/cas/techalerts/TA05-284A.html
• http://www.us-cert.gov/cas/techalerts/TA05-347A.html
• http://www.us-cert.gov/cas/techalerts/TA06-220A.html
• http://www.vupen.com/english/advisories/2005/1450
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-052
• https://exchange.xforce.ibmcloud.com/vulnerabilities/21895
• https://exchange.xforce.ibmcloud.com/vulnerabilities/34754
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1155
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1454
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1464
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1468
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1535
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1538

Affected products (41)

• cpe:2.3:a:ati:catalyst_driver:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:.net_framework:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:.net_framework:1.1:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:.net_framework:1.1:sp2:*:*:*:*:*:*
• cpe:2.3:a:microsoft:.net_framework:1.1:sp3:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:*:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:*:*:ja:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:*:*:ko:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:*:*:zh:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:sp2:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:2000:sp3:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:xp:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:xp:sp2:*:*:*:*:*:*
• cpe:2.3:a:microsoft:office:xp:sp3:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:98:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:2000:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:2002:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:2002:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:2003:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:project:2003:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visio:2000:sr1:*:*:enterprise:*:*:*
• cpe:2.3:a:microsoft:visio:2002:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visio:2002:*:*:*:professional:*:*:*
• cpe:2.3:a:microsoft:visio:2002:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visio:2002:sp2:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visio:2002:sp2:*:*:professional:*:*:*
• cpe:2.3:a:microsoft:visio:2002:sp2:*:*:standard:*:*:*
• cpe:2.3:a:microsoft:visio:2003:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visio:2003:*:*:*:professional:*:*:*
• cpe:2.3:a:microsoft:visio:2003:*:*:*:standard:*:*:*
• cpe:2.3:a:microsoft:visio:2003:sp1:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:2002:gold:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:2003:*:*:*:enterprise_architect:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:2003:gold:*:*:*:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:gold:*:*:*:academic:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:gold:*:*:*:enterprise_architect:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:gold:*:*:*:enterprise_developer:*:*:*
• cpe:2.3:a:microsoft:visual_studio_.net:gold:*:*:*:professional:*:*:*

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