How severe is CVE-2015-4288?

CVE-2015-4288 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-4288 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4288?

CVE-2015-4288 primarily affects Cisco Web 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-2015-4288?

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

When was CVE-2015-4288 published?

CVE-2015-4288 was published on 2015-07-29 and last updated on 2026-06-17.

CVE-2015-4288

CVE-2015-4288 is a medium-severity vulnerability in Cisco Web Security Appliance 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-310.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Cisco Web Security Appliance
Published: 2015-07-29
Last modified: 2026-06-17

Description

The LDAP implementation on the Cisco Web Security Appliance (WSA) 8.5.0-000, Email Security Appliance (ESA) 8.5.7-042, and Content Security Management Appliance (SMA) 8.3.6-048 does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate, aka Bug IDs CSCuo29561, CSCuv40466, and CSCuv40470.

Frequently asked questions

What is CVE-2015-4288?: The LDAP implementation on the Cisco Web Security Appliance (WSA) 8.5.0-000, Email Security Appliance (ESA) 8.5.7-042, and Content Security Management Appliance (SMA) 8.3.6-048 does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate, aka Bug IDs CSCuo29561, CSCuv40466, and CSCuv40470.
How severe is CVE-2015-4288?: CVE-2015-4288 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2015-4288 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4288?: CVE-2015-4288 primarily affects Cisco Web 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-2015-4288?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4288 published?: CVE-2015-4288 was published on 2015-07-29 and last updated on 2026-06-17.

References

http://tools.cisco.com/security/center/viewAlert.x?alertId=40137

Affected products (3)

cpe:2.3:o:cisco:web_security_appliance:8.5.0-000:*:*:*:*:*:*:*
cpe:2.3:h:cisco:email_security_appliance:8.5.7-042:*:*:*:*:*:*:*
cpe:2.3:h:cisco:content_security_management_appliance:8.3.6-048:*:*:*:*:*:*:*

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