How severe is CVE-2015-0607?

CVE-2015-0607 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-0607 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0607?

CVE-2015-0607 primarily affects Cisco Ios. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-0607?

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

When was CVE-2015-0607 published?

CVE-2015-0607 was published on 2015-03-06 and last updated on 2026-06-17.

CVE-2015-0607

CVE-2015-0607 is a medium-severity vulnerability in Cisco Ios with a CVSS 2.0 base score of 4.3. 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-287.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cisco Ios
Published: 2015-03-06
Last modified: 2026-06-17

Description

The Authentication Proxy feature in Cisco IOS does not properly handle invalid AAA return codes from RADIUS and TACACS+ servers, which allows remote attackers to bypass authentication in opportunistic circumstances via a connection attempt that triggers an invalid code, as demonstrated by a connection attempt with a blank password, aka Bug IDs CSCuo09400 and CSCun16016.

Frequently asked questions

What is CVE-2015-0607?: The Authentication Proxy feature in Cisco IOS does not properly handle invalid AAA return codes from RADIUS and TACACS+ servers, which allows remote attackers to bypass authentication in opportunistic circumstances via a connection attempt that triggers an invalid code, as demonstrated by a connection attempt with a blank password, aka Bug IDs CSCuo09400 and CSCun16016.
How severe is CVE-2015-0607?: CVE-2015-0607 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-0607 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0607?: CVE-2015-0607 primarily affects Cisco Ios. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-0607?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-0607 published?: CVE-2015-0607 was published on 2015-03-06 and last updated on 2026-06-17.

References

Affected products (11)

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:15.4\(2\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(100\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4t:*:*:*:*:*:*:*

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