How severe is CVE-2011-1649?

CVE-2011-1649 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2011-1649 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1649?

CVE-2011-1649 primarily affects Cisco Content Delivery System Engine. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1649?

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-2011-1649 published?

CVE-2011-1649 was published on 2011-05-31 and last updated on 2026-06-16.

CVE-2011-1649

CVE-2011-1649 is a high-severity vulnerability in Cisco Content Delivery System Engine with a CVSS 2.0 base score of 7.8. 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-399.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Content Delivery System Engine
Published: 2011-05-31
Last modified: 2026-06-16

Description

The Internet Streamer application in Cisco Content Delivery System (CDS) with software 2.5.7, 2.5.8, and 2.5.9 before build 126 allows remote attackers to cause a denial of service (Web Engine crash) via a crafted URL, aka Bug IDs CSCtg67333 and CSCth25341.

Frequently asked questions

What is CVE-2011-1649?: The Internet Streamer application in Cisco Content Delivery System (CDS) with software 2.5.7, 2.5.8, and 2.5.9 before build 126 allows remote attackers to cause a denial of service (Web Engine crash) via a crafted URL, aka Bug IDs CSCtg67333 and CSCth25341.
How severe is CVE-2011-1649?: CVE-2011-1649 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2011-1649 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-1649?: CVE-2011-1649 primarily affects Cisco Content Delivery System Engine. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-1649?: 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-2011-1649 published?: CVE-2011-1649 was published on 2011-05-31 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:h:cisco:content_delivery_system_engine:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:content_delivery_system:2.5.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:content_delivery_system:2.5.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:content_delivery_system:2.5.9:*:*:*:*:*:*:*

Other CWE-399 (Resource Management Errors) vulnerabilities

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CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
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-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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