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CVE-2018-0175

Cisco IOS, XR, and XE Software Buffer Overflow

8.0 HIGHActively exploited (CISA KEV)EPSS 3.48%
  1. Published28 Mar 2018
  2. Added to CISA KEV3 Mar 2022
  3. Remediation due17 Mar 2022
Actively exploited (CISA KEV)

Format string vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device.

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

Description

Format String vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCvd73664.

CVSS 3.1 breakdown

Attack vectorAdjacent
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Cisco iOS≤ 15.2\(4a\)ea5 · ≤ 15.2\(6\)e0a · ≤ 15.6.3m1 · 15.4\(3\)m4.1
Cisco iOS XE≤ 15.2\(4a\)ea5 · ≤ 15.2\(6\)e0a · ≤ 15.6.3m1 · 15.4\(3\)m4.1
Cisco iOS XR15.4\(3\)m4.1

Remediation

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

References

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Frequently asked

Is CVE-2018-0175 being actively exploited?

Yes. CVE-2018-0175 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Mar 2022.

How severe is CVE-2018-0175?

CVE-2018-0175 has a CVSS 3.1 base score of 8.0, rated high. EPSS estimates a 3.48% probability of exploitation.

Which products are affected by CVE-2018-0175?

Affected products include Cisco iOS, Cisco iOS XE, Cisco iOS XR.

How do I fix CVE-2018-0175?

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-2018-0175 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.

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