The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the handler application, which allows remote attackers to execute arbitrary programs via a crafted web site, aka "Telnet Handler Remote Code Execution Vulnerability."
Published Aug 10, 2011
9.3
HIGHCVSS 2.0
EPSS 34.21%
Description
The telnet URI handler in Microsoft Internet Explorer 6 through 9 does not properly launch the handler application, which allows remote attackers to execute arbitrary programs via a crafted web site, aka "Telnet Handler Remote Code Execution Vulnerability."
Affected products
No data.
Configuration 1
- 6
Running on/with
- n/a
- n/a
- n/a
Configuration 2
- 7
Running on/with
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 3
- 8
Running on/with
- n/a
- n/a
- n/a
- n/a
- r2
- r2
- n/a
- n/a
- n/a
- n/a
Configuration 4
- 9
Running on/with
- n/a
- n/a
- n/a
- r2
- r2
- n/a
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (22 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 34.21% (0.34208) | 98.36th | v5 (v2026.06.15) |
| Jun 15, 2026 | 34.34% (0.34340) | 98.19th | v5 (v2026.06.15) |
| Feb 9, 2026 | 32.22% (0.32223) | 96.71th | v4 (v2025.03.14) |
| Dec 28, 2025 | 25.78% (0.25782) | 96.07th | v4 (v2025.03.14) |
| Dec 27, 2025 | 23.56% (0.23563) | 95.82th | v4 (v2025.03.14) |
| Oct 28, 2025 | 25.01% (0.25009) | 95.91th | v4 (v2025.03.14) |
| Oct 27, 2025 | 22.83% (0.22831) | 95.65th | v4 (v2025.03.14) |
| Oct 18, 2025 | 25.01% (0.25009) | 95.90th | v4 (v2025.03.14) |
| Oct 1, 2025 | 29.16% (0.29163) | 96.44th | v4 (v2025.03.14) |
| Jul 1, 2025 | 26.78% (0.26780) | 96.13th | v4 (v2025.03.14) |
| Mar 17, 2025 | 29.41% (0.29414) | 96.20th | v4 (v2025.03.14) |
| Dec 17, 2024 | 91.62% (0.91624) | 99.15th | v3 (v2023.03.01) |
| Dec 12, 2024 | 96.47% (0.96468) | 99.65th | v3 (v2023.03.01) |
| Jul 8, 2024 | 96.42% (0.96418) | 99.59th | v3 (v2023.03.01) |
| May 19, 2024 | 96.41% (0.96408) | 99.57th | v3 (v2023.03.01) |
| Mar 30, 2024 | 96.46% (0.96463) | 99.56th | v3 (v2023.03.01) |
| Dec 17, 2023 | 96.66% (0.96662) | 99.55th | v3 (v2023.03.01) |
| Oct 23, 2023 | 96.73% (0.96734) | 99.54th | v3 (v2023.03.01) |
| Jul 6, 2023 | 96.78% (0.96780) | 99.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.88% (0.96879) | 99.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 40.19% (0.40188) | 98.15th | v2 (v2022.01.01) |
| Feb 4, 2022 | 40.19% (0.40188) | 97.41th | v2 (v2022.01.01) |
No CWE recorded.
References (5)
- http://jvn.jp/en/jp/JVN80404511/index.html third-party-advisoryx_refsource_JVNThird Party AdvisoryVDB Entry
- http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.html third-party-advisoryx_refsource_JVNDBThird Party AdvisoryVDB Entry
- http://www.us-cert.gov/cas/techalerts/TA11-221A.html third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057 vendor-advisoryx_refsource_MSPatchVendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684 vdb-entrysignaturex_refsource_OVALTool Signature
| Link | Providers | Tags |
|---|---|---|
| http://jvn.jp/en/jp/JVN80404511/index.html | third-party-advisoryx_refsource_JVNThird Party AdvisoryVDB Entry | |
| http://jvndb.jvn.jp/ja/contents/2011/JVNDB-2011-000060.html | third-party-advisoryx_refsource_JVNDBThird Party AdvisoryVDB Entry | |
| http://www.us-cert.gov/cas/techalerts/TA11-221A.html | third-party-advisoryx_refsource_CERTThird Party AdvisoryUS Government Resource | |
| https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-057 | vendor-advisoryx_refsource_MSPatchVendor Advisory | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12684 | vdb-entrysignaturex_refsource_OVALTool Signature |
Change history (0)
No recorded changes yet.