How severe is CVE-2015-4184?

CVE-2015-4184 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-4184 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4184?

CVE-2015-4184 primarily affects Cisco Email Security Appliance. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4184?

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

When was CVE-2015-4184 published?

CVE-2015-4184 was published on 2015-06-13 and last updated on 2026-06-17.

CVE-2015-4184

CVE-2015-4184 is a medium-severity vulnerability in Cisco Email Security Appliance 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: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Email Security Appliance
Published: 2015-06-13
Last modified: 2026-06-17

Description

The anti-spam scanner on Cisco Email Security Appliance (ESA) devices 3.3.1-09, 7.5.1-gpl-022, and 8.5.6-074 allows remote attackers to bypass intended e-mail restrictions via a malformed DNS SPF record, aka Bug IDs CSCuu35853 and CSCuu37733.

Frequently asked questions

What is CVE-2015-4184?: The anti-spam scanner on Cisco Email Security Appliance (ESA) devices 3.3.1-09, 7.5.1-gpl-022, and 8.5.6-074 allows remote attackers to bypass intended e-mail restrictions via a malformed DNS SPF record, aka Bug IDs CSCuu35853 and CSCuu37733.
How severe is CVE-2015-4184?: CVE-2015-4184 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-4184 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4184?: CVE-2015-4184 primarily affects Cisco Email Security Appliance. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4184?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4184 published?: CVE-2015-4184 was published on 2015-06-13 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:h:cisco:email_security_appliance:3.331-09:*:*:*:*:*:*:*
cpe:2.3:h:cisco:email_security_appliance:7.5.1-gpl-022:*:*:*:*:*:*:*
cpe:2.3:h:cisco:email_security_appliance:8.5.6-074:*:*:*:*:*:*:*

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