2N Access Commander version 3.4.2 and prior improperly invalidates session tokens, allowing…
CVE-2025-59786 is a critical-severity vulnerability in 2N Access Commander from 2N Telekomunikace a.s., with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 3.5 as the first without the flaw, so updating 2N Access Commander to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.29% chance of exploitation within 30 days, which is low compared with other CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update 2N Access Commander to 3.5 or a later version.
- Update Access Commander to 3.5 or a later version.
- Read the advisory on 2n.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| 2N Telekomunikace a.s. | 2N Access Commander | before 3.5 | 3.5 |
| 2n | Access Commander | before 3.5 | 3.5 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 6.0 | Medium | CNA |
| CVSS 3.1 | 9.8 | Critical | NVD |
Official description
2N Access Commander version 3.4.2 and prior improperly invalidates session tokens, allowing multiple session cookies to remain active after logout in web application.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in 2N Access Commander
- 7.2 High severity
- 7.2 High severity
- 7.2 High severity
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