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CVE-2018-5234

45
FAUCET Score

CVE-2018-5234 describes a high-severity command injection vulnerability affecting Norton Core routers running firmware versions prior to v237. This flaw allows an unauthenticated attacker on the adjacent network to execute arbitrary commands on the device. The vulnerability carries a CVSS score of 8.0 (High) due to its low attack complexity and complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, a proof-of-concept exploit is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 237CPE matchmatch criteria
cpe:2.3:o:symantec:norton_core_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.0HIGH

CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.1
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
16.71%
Probability of exploitation in next 30 days
EPSS Percentile
96.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-44574 · May 2, 2018
This CVE's current EPSS score of 0.1671 is in the 99th percentile among its peer group of 122 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exploit-db.com / exploits/44574
ExploitThird Party AdvisoryVDB Entry
symantec.com / security_response/securityupdates/detail.jsp
Vendor Advisory
securityfocus.com / bid/103955
Third Party AdvisoryVDB Entry