How severe is CVE-2016-6027?

CVE-2016-6027 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2016-6027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6027?

CVE-2016-6027 primarily affects Ibm Sterling Secure Proxy. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6027?

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

When was CVE-2016-6027 published?

CVE-2016-6027 was published on 2016-10-06 and last updated on 2026-06-17.

CVE-2016-6027

CVE-2016-6027 is a medium-severity vulnerability in Ibm Sterling Secure Proxy with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ibm Sterling Secure Proxy
Published: 2016-10-06
Last modified: 2026-06-17

Description

The Configuration Manager in IBM Sterling Secure Proxy (SSP) 3.4.2 before 3.4.2.0 iFix 8 and 3.4.3 before 3.4.3.0 iFix 1 does not enable the HSTS protection mechanism, which makes it easier for remote attackers to obtain sensitive information or modify data by leveraging use of HTTP.

Frequently asked questions

What is CVE-2016-6027?: The Configuration Manager in IBM Sterling Secure Proxy (SSP) 3.4.2 before 3.4.2.0 iFix 8 and 3.4.3 before 3.4.3.0 iFix 1 does not enable the HSTS protection mechanism, which makes it easier for remote attackers to obtain sensitive information or modify data by leveraging use of HTTP.
How severe is CVE-2016-6027?: CVE-2016-6027 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2016-6027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6027?: CVE-2016-6027 primarily affects Ibm Sterling Secure Proxy. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6027?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6027 published?: CVE-2016-6027 was published on 2016-10-06 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix1:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix2:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix3:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix4:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix5:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix6:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.2.0:ifix7:*:*:*:*:*:*
cpe:2.3:a:ibm:sterling_secure_proxy:3.4.3.0:*:*:*:*:*:*:*

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