CVE-2018-0117

highpriority · track · 35EPSS 0.017 · 78 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.74% (78th) EPSS

CVSS 7.8 · high

Is it mine?

10 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisco_csaf · nvd

EPSS · scored 2026-10-27

A vulnerability in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software could allow an unauthenticated, remote attacker to cause both control function (CF) instances on an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient handling of user-supplied data by the affected software. An attacker could exploit this vulnerability by sending malicious traffic to the internal distributed instance (DI) network address on an affected system. A successful exploit could allow the attacker to cause an unhandled error condition on the affected system, which would cause the CF instances to reload and consequently cause the entire VPC to reload, resulting in the disconnection of all subscribers and a DoS condition on the affected system. This vulnerability affects Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software N4.0 through N5.5 with the Cisco StarOS operating system 19.2 through 21.3. Cisco Bug IDs: CSCve17656.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedCisco Virtualized Packet Core cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com

cvss

Technical severity, 0–10. One row per scoring source.

8.6

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.07.8highAV:N/AC:L/Au:N/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 10 · impact 6.9

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 4

v3.07.9highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.08.6highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:Hsecondary · Cisco PSIRT US

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

affected products (10)

Products and version ranges known to be affected.

Cisco Cisco Virtualized Packet Core all versionscisco_csafUS
n/a Cisco Virtualized Packet Core-Distributed Instance≤ Cisco Virtualized Packet Core-Distributed Instanceenisa_euvdEU
cisco asr 5000 firmware= 21.1.v0.66836nvdUScpe:2.3:o:cisco:asr_5000_firmware:*:*:*:*:*:*:*:*
cisco asr 5000 firmware= 21.1.v7nvdUScpe:2.3:o:cisco:asr_5000_firmware:*:*:*:*:*:*:*:*
cisco asr 5000 firmware= 21.3.0nvdUScpe:2.3:o:cisco:asr_5000_firmware:*:*:*:*:*:*:*:*
cisco asr 5000 firmware= 21.6.0nvdUScpe:2.3:o:cisco:asr_5000_firmware:*:*:*:*:*:*:*:*
cisco asr 5500 firmware= 21.1.v0.66836nvdUScpe:2.3:o:cisco:asr_5500_firmware:*:*:*:*:*:*:*:*
cisco asr 5500 firmware= 21.1.v7nvdUScpe:2.3:o:cisco:asr_5500_firmware:*:*:*:*:*:*:*:*
cisco asr 5500 firmware= 21.3.0nvdUScpe:2.3:o:cisco:asr_5500_firmware:*:*:*:*:*:*:*:*
cisco asr 5500 firmware= 21.6.0nvdUScpe:2.3:o:cisco:asr_5500_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

cisco-sa-20180207-vpcdiCisco Virtualized Packet Core-Distributed Instance Denial of Service Vulnerability2018-02-07csaf · cisco_csafUS
A vulnerability in the ingress packet processing functionality of the Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software could allow an unauthenticated, remote attacker to cause both control function (CF) instances on an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient handling of user-supplied data by the affected software. An attacker could exploit this vulnerability by sending malicious traffic to the internal distributed instance (DI) network address on an affected system. A successful exploit could allow the attacker to cause an unhandled error condition on the affected system, which would cause the CF instances to reload and consequently cause the entire VPC to reload, resulting in the disconnection of all subscribers and a DoS condition on the affected system. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-vpcdi ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180207-vpcdi"]

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisco_csaf nvd NVD CVE.org MITRE

published 2018-02-08modified 2026-06-17

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+25188 more

references (6)

External citations — patches, advisories, analysis.

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