How severe is CVE-2008-1156?

CVE-2008-1156 has a CVSS 2.0 base score of 5.1, rated medium severity.

Is CVE-2008-1156 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-1156?

CVE-2008-1156 primarily affects Cisco Cisco Ios. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-1156?

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

When was CVE-2008-1156 published?

CVE-2008-1156 was published on 2008-03-27 and last updated on 2026-06-16.

CVE-2008-1156

CVE-2008-1156 is a medium-severity vulnerability in Cisco Cisco Ios with a CVSS 2.0 base score of 5.1. 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-16.

Key facts

Severity: Medium (CVSS 2.0 base score 5.1)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Cisco Cisco Ios
Published: 2008-03-27
Last modified: 2026-06-16

Description

Unspecified vulnerability in the Multicast Virtual Private Network (MVPN) implementation in Cisco IOS 12.0, 12.2, 12.3, and 12.4 allows remote attackers to create "extra multicast states on the core routers" via a crafted Multicast Distribution Tree (MDT) Data Join message.

Frequently asked questions

What is CVE-2008-1156?: Unspecified vulnerability in the Multicast Virtual Private Network (MVPN) implementation in Cisco IOS 12.0, 12.2, 12.3, and 12.4 allows remote attackers to create "extra multicast states on the core routers" via a crafted Multicast Distribution Tree (MDT) Data Join message.
How severe is CVE-2008-1156?: CVE-2008-1156 has a CVSS 2.0 base score of 5.1, rated medium severity.
Is CVE-2008-1156 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-1156?: CVE-2008-1156 primarily affects Cisco Cisco Ios. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-1156?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-1156 published?: CVE-2008-1156 was published on 2008-03-27 and last updated on 2026-06-16.

References

Affected products (4)

cpe:2.3:o:cisco:cisco_ios:12.3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:cisco_ios:12.4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*

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