7.5
CVE-2026-27857
- EPSS 0.03%
- Veröffentlicht 27.03.2026 08:10:20
- Zuletzt bearbeitet 30.04.2026 17:42:47
- Quelle security@open-xchange.com
- CVE-Watchlists
- Unerledigt
LoginSending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for longer time periods by not sending the command ending LF. So attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Install fixed version, there is no other remediation. No publicly available exploits are known.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Open-xchange ≫ Dovecot SwEditionpro Version < 2.3.22.1
Open-xchange ≫ Dovecot SwEditionpro Version >= 3.0.0 < 3.0.5
Open-xchange ≫ Dovecot SwEditionpro Version >= 3.1.0 < 3.1.4
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.03% | 0.08 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| nvd@nist.gov | 7.5 | 3.9 | 3.6 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
|
| security@open-xchange.com | 4.3 | 2.8 | 1.4 |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
|
CWE-400 Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.