What is CVE-2017-12231?

CVE-2017-12231 is a high-severity vulnerability in Cisco 1100-4g\/6g_integrated_services_router, classified under CWE-399. CVSS score: 7.5/10. Published 2017-09-29.

How severe is CVE-2017-12231?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2017-12231 known to be exploited?

Yes. CVE-2017-12231 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Vulnerability in Cisco 1100-4g\/6g_integrated_services_router

CVE-2017-12231

A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The…

EPSS: 0.071 (93.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

CWE-399

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-03-24.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK, Broken Link)
psirt@cisco.com (x_refsource_CONFIRM, Vendor Advisory)
psirt@cisco.com (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2017-12231?: CVE-2017-12231 is a high-severity vulnerability in Cisco 1100-4g\/6g_integrated_services_router, classified under CWE-399. CVSS score: 7.5/10. Published 2017-09-29.
How severe is CVE-2017-12231?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-12231 known to be exploited?: Yes. CVE-2017-12231 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.