CVE-2018-16495
CVE-2018-16495 is a high-severity vulnerability in Versa-networks Versa Operating System with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-384.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- CVSS v2: 6.5
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-384
- Affected product: Versa-networks Versa Operating System
- Published:
- Last modified:
Description
In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.
Frequently asked questions
- What is CVE-2018-16495?
- In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.
- How severe is CVE-2018-16495?
- CVE-2018-16495 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2018-16495 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-16495?
- CVE-2018-16495 affects Versa-networks Versa Operating System. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-16495?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-16495 published?
- CVE-2018-16495 was published on 2021-05-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
More vulnerabilities in Versa-networks Versa Operating System
- CVE-2018-16494 — High (CVSS 8.8): In VOS and overly permissive "umask" may allow for authorized users of the server to gain unauthorized access through…
- CVE-2018-16499 — Medium (CVSS 5.9): In VOS compromised, an attacker at network endpoints can possibly view communications between an unsuspecting user and…
- CVE-2019-25030 — Medium (CVSS 5.5): In Versa Director, Versa Analytics and VOS, Passwords are not hashed using an adaptive cryptographic hash function or…
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