How severe is CVE-2015-0609?

CVE-2015-0609 has a CVSS 2.0 base score of 7.1, rated high severity.

Is CVE-2015-0609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0609?

CVE-2015-0609 primarily affects Cisco Ios. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0609?

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-2015-0609 published?

CVE-2015-0609 was published on 2015-02-16 and last updated on 2026-06-17.

CVE-2015-0609

CVE-2015-0609 is a high-severity vulnerability in Cisco Ios 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% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
Affected product: Cisco Ios
Published: 2015-02-16
Last modified: 2026-06-17

Description

Race condition in the Common Classification Engine (CCE) in the Measurement, Aggregation, and Correlation Engine (MACE) implementation in Cisco IOS 15.4(2)T3 and earlier allows remote attackers to cause a denial of service (device reload) via crafted network traffic that triggers improper handling of the timing of process switching and Cisco Express Forwarding (CEF) switching, aka Bug ID CSCuj96752.

Frequently asked questions

What is CVE-2015-0609?: Race condition in the Common Classification Engine (CCE) in the Measurement, Aggregation, and Correlation Engine (MACE) implementation in Cisco IOS 15.4(2)T3 and earlier allows remote attackers to cause a denial of service (device reload) via crafted network traffic that triggers improper handling of the timing of process switching and Cisco Express Forwarding (CEF) switching, aka Bug ID CSCuj96752.
How severe is CVE-2015-0609?: CVE-2015-0609 has a CVSS 2.0 base score of 7.1, rated high severity.
Is CVE-2015-0609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0609?: CVE-2015-0609 primarily affects Cisco Ios. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0609?: 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-2015-0609 published?: CVE-2015-0609 was published on 2015-02-16 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4t:*:*:*:*:*:*:*

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