What is CVE-2017-6742?

CVE-2017-6742 is a high-severity vulnerability in Cisco Ios Xe Software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-07-17.

How severe is CVE-2017-6742?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2017-6742 known to be exploited?

Yes. CVE-2017-6742 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-04-19), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.

Buffer overflow in Cisco Ios Xe Software

CVE-2017-6742

A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet…

Vulnerability class: Buffer Overflow

EPSS: 0.214 (97.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cisco Ios Xe Software — versions 16.4.1, 3.6.3E, 3.13.0aS
Cisco Ios
Cisco Ios_xe
Intellishield Universal Product — versions N/A

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2023-04-19. 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: 2023-05-10.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

psirt@cisco.com (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link, Third Party Advisory, VDB Entry)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link, Third Party Advisory, VDB Entry)
af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2017-6742?: CVE-2017-6742 is a high-severity vulnerability in Cisco Ios Xe Software, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-07-17.
How severe is CVE-2017-6742?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2017-6742 known to be exploited?: Yes. CVE-2017-6742 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-04-19), indicating it is being actively exploited. 5 public proof-of-concept repositories are indexed.