How severe is CVE-2016-1394?

CVE-2016-1394 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.

Is CVE-2016-1394 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1394?

CVE-2016-1394 primarily affects Cisco Firesight System Software. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1394?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-1394 published?

CVE-2016-1394 was published on 2016-07-03 and last updated on 2026-06-17.

CVE-2016-1394

CVE-2016-1394 is a high-severity vulnerability in Cisco Firesight System Software with a CVSS 3.x base score of 8.6. 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-255.

Key facts

Severity: High (CVSS 3.x base score 8.6)
CVSS v2: 7.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Cisco Firesight System Software
Published: 2016-07-03
Last modified: 2026-06-17

Description

Cisco Firepower System Software 6.0.0 through 6.1.0 has a hardcoded account, which allows remote attackers to obtain CLI access by leveraging knowledge of the password, aka Bug ID CSCuz56238.

Frequently asked questions

What is CVE-2016-1394?: Cisco Firepower System Software 6.0.0 through 6.1.0 has a hardcoded account, which allows remote attackers to obtain CLI access by leveraging knowledge of the password, aka Bug ID CSCuz56238.
How severe is CVE-2016-1394?: CVE-2016-1394 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability high.
Is CVE-2016-1394 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1394?: CVE-2016-1394 primarily affects Cisco Firesight System Software. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1394?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-1394 published?: CVE-2016-1394 was published on 2016-07-03 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:cisco:firesight_system_software:6.0.0:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:6.0.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:6.0.1:*:*:*:*:*:*:*
cpe:2.3:a:cisco:firesight_system_software:6.1.0:*:*:*:*:*:*:*

More vulnerabilities in Cisco Firesight System Software

CVE-2016-6394 — Critical (CVSS 9.1): Session fixation vulnerability in Cisco Firepower Management Center and Cisco FireSIGHT System Software through 6.1.0…
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CVE-2016-6417 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability in Cisco FireSIGHT System Software 4.10.2 through 6.1.0 and Firepower…
CVE-2017-6766 — High (CVSS 7.5): A vulnerability in the Secure Sockets Layer (SSL) Decryption and Inspection feature of Cisco Firepower System Software…
CVE-2016-9193 — High (CVSS 7.5): A vulnerability in the malicious file detection and blocking features of Cisco Firepower Management Center and Cisco…
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CVE-2015-7856 — Critical (CVSS 10.0): OpenNMS has a default password of rtc for the rtc account, which makes it easier for remote attackers to obtain access…
CVE-2014-9736 — Critical (CVSS 10.0): GE Healthcare Centricity Clinical Archive Audit Trail Repository has a default password of initinit for the (1) SSL key…
CVE-2014-7233 — Critical (CVSS 10.0): GE Healthcare Precision THUNIS-800+ has a default password of (1) 1973 for the factory default System Utilities menu,…
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