How severe is CVE-2016-1356?

CVE-2016-1356 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2016-1356 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1356?

CVE-2016-1356 affects Cisco Firesight System Software. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-1356?

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

When was CVE-2016-1356 published?

CVE-2016-1356 was published on 2016-03-03 and last updated on 2026-06-17.

CVE-2016-1356

CVE-2016-1356 is a low-severity vulnerability in Cisco Firesight System Software with a CVSS 3.x base score of 3.7. 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: Low (CVSS 3.x base score 3.7)
CVSS v2: 4.3
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Cisco Firesight System Software
Published: 2016-03-03
Last modified: 2026-06-17

Description

Cisco FireSIGHT System Software 6.1.0 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to enumerate valid usernames by measuring timing differences, aka Bug ID CSCuy41615.

Frequently asked questions

What is CVE-2016-1356?: Cisco FireSIGHT System Software 6.1.0 does not use a constant-time algorithm for verifying credentials, which makes it easier for remote attackers to enumerate valid usernames by measuring timing differences, aka Bug ID CSCuy41615.
How severe is CVE-2016-1356?: CVE-2016-1356 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2016-1356 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1356?: CVE-2016-1356 affects Cisco Firesight System Software. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-1356?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-1356 published?: CVE-2016-1356 was published on 2016-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cisco:firesight_system_software:_6.1.0:*:*:*:*:*:*:*

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