How severe is CVE-2015-0631?

CVE-2015-0631 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2015-0631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0631?

CVE-2015-0631 primarily affects Cisco Ips Sensor Software. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0631?

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-2015-0631 published?

CVE-2015-0631 was published on 2015-02-21 and last updated on 2026-06-17.

CVE-2015-0631

CVE-2015-0631 is a high-severity vulnerability in Cisco Ips Sensor 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. The underlying weakness is classified as CWE-362.

Key facts

Severity: High (CVSS 2.0 base score 7.1)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Cisco Ips Sensor Software
Published: 2015-02-21
Last modified: 2026-06-17

Description

Race condition in the SSL implementation on Cisco Intrusion Prevention System (IPS) devices allows remote attackers to cause a denial of service by making many management-interface HTTPS connections during the key-regeneration phase of an upgrade, aka Bug ID CSCui25688.

Frequently asked questions

What is CVE-2015-0631?: Race condition in the SSL implementation on Cisco Intrusion Prevention System (IPS) devices allows remote attackers to cause a denial of service by making many management-interface HTTPS connections during the key-regeneration phase of an upgrade, aka Bug ID CSCui25688.
How severe is CVE-2015-0631?: CVE-2015-0631 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2015-0631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0631?: CVE-2015-0631 primarily affects Cisco Ips Sensor Software. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0631?: 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-2015-0631 published?: CVE-2015-0631 was published on 2015-02-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:cisco:ips_sensor_software:7.2\(1\)e4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:ips_sensor_software:7.2\(2\)e4:*:*:*:*:*:*:*

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Other CWE-362 (Race Condition) vulnerabilities

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CVE-2010-1228 — Critical (CVSS 10.0): Multiple race conditions in the sandbox infrastructure in Google Chrome before 4.1.249.1036 have unspecified impact and…
CVE-2008-6598 — Critical (CVSS 10.0): Multiple race conditions in WANPIPE before 3.3.6 have unknown impact and attack vectors related to "bri restart logic."
CVE-2026-46137 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential…

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