Is CVE-2022-20678 actively exploited?

No active exploitation of CVE-2022-20678 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2022-20678 be exploited remotely?

Yes. CVE-2022-20678 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2022-20678?

CVE-2022-20678 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2022-20678

HIGH

CVE-2022-20678

CWE-413Published: April 15, 2022· Updated: Jun 17, 2026

7.5

CVSS v3.1

Official Description

A vulnerability in the AppNav-XE feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of certain TCP segments. An attacker could exploit this vulnerability by sending a stream of crafted TCP traffic at a high rate through an interface of an affected device. That interface would need to have AppNav interception enabled. A successful exploit could allow the attacker to cause the device to reload.

NVD Source

Technical Analysis

CVE-2022-20678 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Cisco25 product(s)

ios xecatalyst 8000v edgecloud services router 1000v1100-4g integrated services router1100-6g integrated services router1101 integrated services router1109 integrated services router1111x integrated services router111x integrated services router1120 integrated services router1131 integrated services router1160 integrated services router+13

Source: NVD CPE · 28 total CPE entries