How severe is CVE-2016-6396?

CVE-2016-6396 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2016-6396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6396?

CVE-2016-6396 primarily affects Cisco Firesight System Software. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-6396?

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

When was CVE-2016-6396 published?

CVE-2016-6396 was published on 2016-09-12 and last updated on 2026-06-17.

CVE-2016-6396

CVE-2016-6396 is a medium-severity vulnerability in Cisco Firesight System Software with a CVSS 3.x base score of 5.3. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Cisco Firesight System Software
Published: 2016-09-12
Last modified: 2026-06-17

Description

Cisco Firepower Management Center before 6.1 and FireSIGHT System Software before 6.1, when certain malware blocking options are enabled, allow remote attackers to bypass malware detection via crafted fields in HTTP headers, aka Bug ID CSCuz44482.

Frequently asked questions

What is CVE-2016-6396?: Cisco Firepower Management Center before 6.1 and FireSIGHT System Software before 6.1, when certain malware blocking options are enabled, allow remote attackers to bypass malware detection via crafted fields in HTTP headers, aka Bug ID CSCuz44482.
How severe is CVE-2016-6396?: CVE-2016-6396 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2016-6396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6396?: CVE-2016-6396 primarily affects Cisco Firesight System Software. In total, 52 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-6396?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-6396 published?: CVE-2016-6396 was published on 2016-09-12 and last updated on 2026-06-17.

References

Affected products (52)

cpe:2.3:a:cisco:firesight_system_software:5.1.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.9:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.10:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.1.1.11:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.6:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.0.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.4:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.5:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.3.1.7:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.4.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:5.4.0.1:*:*:*:*:*:*:*

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