How severe is CVE-2016-1456?

CVE-2016-1456 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-1456 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1456?

CVE-2016-1456 primarily affects Cisco Ios Xr. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1456?

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-2016-1456 published?

CVE-2016-1456 was published on 2016-07-15 and last updated on 2026-06-17.

CVE-2016-1456

CVE-2016-1456 is a high-severity vulnerability in Cisco Ios Xr with a CVSS 3.x base score of 7.8. 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-264.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Cisco Ios Xr
Published: 2016-07-15
Last modified: 2026-06-17

Description

The CLI in Cisco IOS XR 6.x through 6.0.1 allows local users to execute arbitrary OS commands in a privileged context by leveraging unspecified container access, aka Bug ID CSCuz62721.

Frequently asked questions

What is CVE-2016-1456?: The CLI in Cisco IOS XR 6.x through 6.0.1 allows local users to execute arbitrary OS commands in a privileged context by leveraging unspecified container access, aka Bug ID CSCuz62721.
How severe is CVE-2016-1456?: CVE-2016-1456 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-1456 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1456?: CVE-2016-1456 primarily affects Cisco Ios Xr. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1456?: 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-2016-1456 published?: CVE-2016-1456 was published on 2016-07-15 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:cisco:ios_xr:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.0.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios_xr:6.0_base:*:*:*:*:*:*:*

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