How severe is CVE-2010-2821?

CVE-2010-2821 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2010-2821 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2821?

CVE-2010-2821 primarily affects Cisco Firewall Services Module Software. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2821?

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-2010-2821 published?

CVE-2010-2821 was published on 2010-08-09 and last updated on 2026-06-16.

CVE-2010-2821

CVE-2010-2821 is a high-severity vulnerability in Cisco Firewall Services Module Software with a CVSS 2.0 base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Firewall Services Module Software
Published: 2010-08-09
Last modified: 2026-06-16

Description

Unspecified vulnerability on the Cisco Firewall Services Module (FWSM) with software 3.2 before 3.2(17.2), 4.0 before 4.0(11.1), and 4.1 before 4.1(1.2) for Catalyst 6500 series switches and 7600 series routers, when multi-mode is enabled, allows remote attackers to cause a denial of service (device reload) via crafted (1) Telnet, (2) SSH, or (3) ASDM traffic over TCP, aka Bug ID CSCtg68694.

Frequently asked questions

What is CVE-2010-2821?: Unspecified vulnerability on the Cisco Firewall Services Module (FWSM) with software 3.2 before 3.2(17.2), 4.0 before 4.0(11.1), and 4.1 before 4.1(1.2) for Catalyst 6500 series switches and 7600 series routers, when multi-mode is enabled, allows remote attackers to cause a denial of service (device reload) via crafted (1) Telnet, (2) SSH, or (3) ASDM traffic over TCP, aka Bug ID CSCtg68694.
How severe is CVE-2010-2821?: CVE-2010-2821 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2010-2821 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2821?: CVE-2010-2821 primarily affects Cisco Firewall Services Module Software. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2821?: 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-2010-2821 published?: CVE-2010-2821 was published on 2010-08-09 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:o:cisco:firewall_services_module_software:3.2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(1\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(2\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(3\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(13\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(14\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:3.2\(16\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0\(4\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0\(6\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0\(7\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0\(8\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.0\(10\):*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:firewall_services_module_software:4.1\(1\):*:*:*:*:*:*:*
cpe:2.3:h:cisco:firewall_services_module:*:*:*:*:*:*:*:*

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