CVE-2018-16495

mediumpriority · track · 35EPSS 0.009 · 60 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.91% (60th) EPSS

CVSS 6.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-384USprimary

affected products (4)

Products and version ranges known to be affected.

n/a Versa VOS≤ Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1enisa_euvdEU
versa-networks versa operating system< 16.1r2s11nvdUScpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
versa-networks versa operating system20.2.0 → 20.2.2nvdUScpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*
versa-networks versa operating system21.1.0 → 21.1.1nvdUScpe:2.3:o:versa-networks:versa_operating_system:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2021-05-26modified 2026-06-17

related (608)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2026-102489US	critical9.8OT critical	1.96% (80th)	KEV	2026-09-30
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CVE-2018-11714US	critical9.8	67.1% (99th)	Exploit	2018-06-04
An issue was discovered on TP-Link TL-WR840N v5 00000005 0.9.1 3.16 v0001.0 Build 170608 Rel.58696n and TL-WR841N v13 00000013 0.9.1 4.16 v0001.0 Build 170622 Rel.64334n devices. T…
CVE-2018-18925US	critical9.8	31.1% (98th)	Exploit	2018-11-04
Gogs 0.11.66 allows remote code execution because it does not properly validate session IDs, as demonstrated by a ".." session-file forgery in the file session provider in file.go.…
CVE-2017-12965US	critical9.8	15.7% (97th)	Exploit	2017-08-23
Session fixation vulnerability in Apache2Triad 1.5.4 allows remote attackers to hijack web sessions via the PHPSESSID parameter.
CVE-2019-10008US	high8.8	19.4% (97th)	Exploit	2019-04-24
Zoho ManageEngine ServiceDesk 9.3 allows session hijacking and privilege escalation because an established guest session is automatically converted into an established administrato…

+603 more

references (4)

External citations — patches, advisories, analysis.

https://hackerone.com/reports/1168192 cnnvd
https://versa-networks.com/Patchcnnvd
https://hackerone.com/reports/1168192 enisa_euvd
https://hackerone.com/reports/1168192Third Party Advisorynvd

scry

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