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CVE-2018-0157

27
FAUCET Score

CVE-2018-0157 is a denial-of-service vulnerability in Cisco IOS XE Software's Zone-Based Firewall, affecting specific Everest releases. An unauthenticated, remote attacker can exploit this by sending specially crafted fragmented IPv4 or IPv6 packets, causing the device to reload. With a CVSS score of 8.6 (High), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, leading to a complete loss of availability. There is no known public exploit code, active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
16.4.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.4.1:*:*:*:*:*:*:*
16.4.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.4.2:*:*:*:*:*:*:*
16.5.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.5.1:*:*:*:*:*:*:*
16.5.1bCPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.5.1b:*:*:*:*:*:*:*
16.6.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios_xe:16.6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.74%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0274 is in the 73rd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-fwip
Vendor Advisory
securityfocus.com / bid/103561
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040593
Third Party AdvisoryVDB Entry