How severe is CVE-2010-4687?

CVE-2010-4687 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2010-4687 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4687?

CVE-2010-4687 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2010-4687?

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

When was CVE-2010-4687 published?

CVE-2010-4687 was published on 2011-01-07 and last updated on 2026-06-16.

CVE-2010-4687

CVE-2010-4687 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 5.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Ios
Published: 2011-01-07
Last modified: 2026-06-16

Description

STCAPP (aka the SCCP telephony control application) on Cisco IOS before 15.0(1)XA1 does not properly handle multiple calls to a shared line, which allows remote attackers to cause a denial of service (port hang) by simultaneously ending two calls that were controlled by CallManager Express (CME), aka Bug ID CSCtd42552.

Frequently asked questions

What is CVE-2010-4687?: STCAPP (aka the SCCP telephony control application) on Cisco IOS before 15.0(1)XA1 does not properly handle multiple calls to a shared line, which allows remote attackers to cause a denial of service (port hang) by simultaneously ending two calls that were controlled by CallManager Express (CME), aka Bug ID CSCtd42552.
How severe is CVE-2010-4687?: CVE-2010-4687 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2010-4687 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4687?: CVE-2010-4687 affects Cisco Ios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2010-4687?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4687 published?: CVE-2010-4687 was published on 2011-01-07 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*

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