How severe is CVE-2016-1347?

CVE-2016-1347 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2016-1347 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-1347?

CVE-2016-1347 primarily affects Cisco Ios. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2016-1347?

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-2016-1347 published?

CVE-2016-1347 was published on 2016-03-24 and last updated on 2026-06-17.

CVE-2016-1347

CVE-2016-1347 is a high-severity vulnerability in Cisco Ios with a CVSS 3.x base score of 7.5. 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-399.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Cisco Ios
Published: 2016-03-24
Last modified: 2026-06-17

Description

The Wide Area Application Services (WAAS) Express implementation in Cisco IOS 15.1 through 15.5 allows remote attackers to cause a denial of service (device reload) via a crafted TCP segment, aka Bug ID CSCuq59708.

Frequently asked questions

What is CVE-2016-1347?: The Wide Area Application Services (WAAS) Express implementation in Cisco IOS 15.1 through 15.5 allows remote attackers to cause a denial of service (device reload) via a crafted TCP segment, aka Bug ID CSCuq59708.
How severe is CVE-2016-1347?: CVE-2016-1347 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2016-1347 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-1347?: CVE-2016-1347 primarily affects Cisco Ios. In total, 33 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2016-1347?: 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-2016-1347 published?: CVE-2016-1347 was published on 2016-03-24 and last updated on 2026-06-17.

References

Affected products (33)

cpe:2.3:o:cisco:ios:15.1\(4\)gc2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)m6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb5a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb8:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.1\(4\)xb8a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)jaz1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(4\)m7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(1\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)jaa1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)m:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)m3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)m4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.3\(3\)m6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(1\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.5\(2\)t1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.5\(2\)t2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.5\(2\)t3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.5\(3\)m:*:*:*:*:*:*:*

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