CVE-2017-3876

Name: CVE-2017-3876
Creator: NVD / NIST
Published: 2017-05-16T17:29:00.247+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.48%

Last modified Jun 17, 2026

CVE-2017-3876 is a vulnerability of currently unknown severity. A vulnerability in the Event Management Service daemon (emsd) of Cisco IOS XR routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of gRPC requests. EPSS estimates a 2.48% chance of exploitation in the next 30 days.

Description

A vulnerability in the Event Management Service daemon (emsd) of Cisco IOS XR routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of gRPC requests. An attacker could exploit this vulnerability by repeatedly sending unauthenticated gRPC requests to the affected device. A successful exploit could allow the attacker to crash the device in such a manner that manual intervention is required to recover. This vulnerability affects all Cisco IOS XR platforms that are running release 6.1.1 of Cisco IOS XR Software when the gRPC service is enabled on the device. The gRPC service is not enabled by default. Cisco Bug IDs: CSCvb14441.

Metrics

EPSS Probability

2.48%

82.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Cisco	Ios Xr	6.1.0
Cisco	Ios Xr	6.1.1

References

http://www.securityfocus.com/bid/98284Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038393
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-ios-xrVendor Advisory
http://www.securityfocus.com/bid/98284Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1038393
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170503-ios-xrVendor Advisory

Timeline

Published: May 16, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-3876?

How severe is CVE-2017-3876?

Severity scoring for CVE-2017-3876 is pending analysis. The EPSS model estimates a 2.48% probability of exploitation in the next 30 days.

How do I fix CVE-2017-3876?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-3876?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST