How severe is CVE-2011-4659?

CVE-2011-4659 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2011-4659 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-4659?

CVE-2011-4659 primarily affects Cisco Telepresence E20 Software. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-4659?

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

When was CVE-2011-4659 published?

CVE-2011-4659 was published on 2012-01-19 and last updated on 2026-06-16.

CVE-2011-4659

CVE-2011-4659 is a critical-severity vulnerability in Cisco Telepresence E20 Software with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Telepresence E20 Software
Published: 2012-01-19
Last modified: 2026-06-16

Description

Cisco TelePresence Software before TE 4.1.1 on the Cisco IP Video Phone E20 has a default password for the root account after an upgrade to TE 4.1.0, which makes it easier for remote attackers to modify the configuration via an SSH session, aka Bug ID CSCtw69889, a different vulnerability than CVE-2011-2555.

Frequently asked questions

What is CVE-2011-4659?: Cisco TelePresence Software before TE 4.1.1 on the Cisco IP Video Phone E20 has a default password for the root account after an upgrade to TE 4.1.0, which makes it easier for remote attackers to modify the configuration via an SSH session, aka Bug ID CSCtw69889, a different vulnerability than CVE-2011-2555.
How severe is CVE-2011-4659?: CVE-2011-4659 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2011-4659 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-4659?: CVE-2011-4659 primarily affects Cisco Telepresence E20 Software. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-4659?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2011-4659 published?: CVE-2011-4659 was published on 2012-01-19 and last updated on 2026-06-16.

References

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120118-te

Affected products (11)

cpe:2.3:a:cisco:telepresence_e20_software:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:te2.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:te2.2.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:te4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:te4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:te4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:tenc4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:tenc4.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:tenc4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:telepresence_e20_software:tenc4.1.1-cucm:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ip_video_phone_e20:-:*:*:*:*:*:*:*

More vulnerabilities in Cisco Telepresence E20 Software

CVE-2011-2577 — High (CVSS 7.8): Unspecified vulnerability in Cisco TelePresence C Series Endpoints, E/EX Personal Video units, and MXP Series Codecs,…

All CVEs affecting Cisco Telepresence E20 Software →

Other CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities

CVE-2016-8363 — Critical (CVSS 10.0): An issue was discovered in Moxa OnCell OnCellG3470A-LTE, AWK-1131A/3131A/4131A Series, AWK-3191 Series, AWK-5232/6232…
CVE-2016-7457 — Critical (CVSS 10.0): VMware vRealize Operations (aka vROps) 6.x before 6.4.0 allows remote authenticated users to gain privileges, or halt…
CVE-2015-7425 — Critical (CVSS 10.0): The Data Protection component in the VMware vSphere GUI in IBM Tivoli Storage Manager for Virtual Environments: Data…
CVE-2015-8267 — Critical (CVSS 10.0): The PasswordReset.Controllers.ResetController.ChangePasswordIndex method in PasswordReset.dll in Dovestones AD Self…
CVE-2015-7919 — Critical (CVSS 10.0): SearchBlox 8.3 before 8.3.1 allows remote attackers to write to the config file, and consequently cause a denial of…
CVE-2015-7071 — Critical (CVSS 10.0): The File Bookmark component in Apple OS X before 10.11.2 allows attackers to bypass a sandbox protection mechanism for…

Browse all CWE-264 (Permissions, Privileges, and Access Controls) vulnerabilities →