How severe is CVE-2010-2834?

CVE-2010-2834 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2010-2834 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-2834?

CVE-2010-2834 primarily affects Cisco Ios. In total, 235 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-2834?

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-2010-2834 published?

CVE-2010-2834 was published on 2010-09-23 and last updated on 2026-06-16.

CVE-2010-2834

CVE-2010-2834 is a high-severity vulnerability in Cisco Ios 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.

Key facts

Severity: High (CVSS 2.0 base score 7.8)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cisco Ios
Published: 2010-09-23
Last modified: 2026-06-16

Description

Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)SU1, 7.x before 7.1(5), and 8.0 before 8.0(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via crafted SIP registration traffic over UDP, aka Bug IDs CSCtf72678 and CSCtf14987.

Frequently asked questions

What is CVE-2010-2834?: Cisco IOS 12.2 through 12.4 and 15.0 through 15.1, Cisco IOS XE 2.5.x and 2.6.x before 2.6.1, and Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 6.x before 6.1(5)SU1, 7.x before 7.1(5), and 8.0 before 8.0(2) allow remote attackers to cause a denial of service (device reload or voice-services outage) via crafted SIP registration traffic over UDP, aka Bug IDs CSCtf72678 and CSCtf14987.
How severe is CVE-2010-2834?: CVE-2010-2834 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2010-2834 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-2834?: CVE-2010-2834 primarily affects Cisco Ios. In total, 235 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-2834?: 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-2010-2834 published?: CVE-2010-2834 was published on 2010-09-23 and last updated on 2026-06-16.

References

Affected products (235)

cpe:2.3:o:cisco:ios:12.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xi:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xj:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xl:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xm:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xp:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xq:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xr:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xs:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xt:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xu:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xv:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1xy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1ya:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1ye:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yf:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yh:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.1yi:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bw:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2bx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2by:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2cz:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2dd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2dx:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ex:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ira:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2irb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2irc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ird:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ire:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixa:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixb:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixc:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixd:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2ixe:*:*:*:*:*:*:*

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