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CVE-2018-16495

27
FAUCET Score

CVE-2018-16495 describes a session fixation vulnerability in Versa Networks Versa Operating System (VOS). The system issues an authentication token before login and fails to change it after successful authentication, allowing an attacker to potentially hijack a user's session. This vulnerability has a CVSS score of 8.8 (High), indicating a severe impact with high confidentiality, integrity, and availability compromise possible via a low-complexity network attack. While the FAUCET Risk Score is 69/100, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.1r2s11CPE matchmatch criteria
cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
>= 20.2.0, < 20.2.2CPE matchmatch criteria
cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
>= 21.1.0, < 21.1.1CPE matchmatch criteria
cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 51st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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

Remediation records are not available for this CVE.

References

hackerone.com / reports/1168192
Third Party Advisory