Secuno
ENNL
Book demo

CVE-2018-0154

Cisco IOS Software Integrated Services Module for VPN Denial-of-Service

7.5 HIGHActively exploited (CISA KEV)EPSS 7.07%
  1. Published28 Mar 2018
  2. Added to CISA KEV3 Mar 2022
  3. Remediation due17 Mar 2022
Actively exploited (CISA KEV)

A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial-of-service (DoS) condition.

Added to KEV: 3 Mar 2022Federal remediation due: 17 Mar 2022

Description

A vulnerability in the crypto engine of the Cisco Integrated Services Module for VPN (ISM-VPN) running Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient handling of VPN traffic by the affected device. An attacker could exploit this vulnerability by sending crafted VPN traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to hang or crash, resulting in a DoS condition. Cisco Bug IDs: CSCvd39267.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Cisco iOSall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2022-207678.6
A vulnerability in the Snort rule evaluation function of Cisco Firepower Threat Defense…
CVE-2022-207158.6
A vulnerability in the remote access SSL VPN features of Cisco Adaptive Security…
CVE-2019-152568.6
A vulnerability in the Internet Key Exchange version 1 (IKEv1) feature of Cisco…
CVE-2018-02408.6
Multiple vulnerabilities in the Application Layer Protocol Inspection feature of Cisco…
CVE-2017-38648.6
A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0…
CVE-2016-13639.8
Buffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC)…

Frequently asked

Is CVE-2018-0154 being actively exploited?

Yes. CVE-2018-0154 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Mar 2022.

How severe is CVE-2018-0154?

CVE-2018-0154 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 7.07% probability of exploitation.

Which products are affected by CVE-2018-0154?

Affected products include Cisco iOS.

How do I fix CVE-2018-0154?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-0154 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.