CVE-2025-48041 SSH_FXP_OPENDIR may Lead to Exhaustion of File Handles
Attackers can exhaust file handles via SSH_FXP_OPENDIR requests, causing denial of service in Erlang OTP SSH servers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-48041?
CVE-2025-48041 is a high-severity denial of service vulnerability in Erlang OTP, published on 11 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Allocation of Resources Without Limits or Throttling vulnerability in Erlang OTP ssh (ssh_sftp modules) allows Excessive Allocation, Flooding. This vulnerability is associated with program files lib/ssh/src/ssh_sftpd.erl.
This issue affects OTP from OTP 17.0 before OTP 28.0.3, OTP 27.3.4.3 and OTP 26.2.5.15, corresponding to ssh from 3.0.1 before 5.3.3, 5.2.11.3 and 5.1.4.12.
Which versions are affected by CVE-2025-48041?
Linux distribution packages (20)
erlang SUSE:Enterprise Storage 7.1 | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Module for Server Applications 15 SP6 | All versions | 23.3.4.19-150300.3.26.1 |
erlang26 SUSE:Linux Enterprise Module for Server Applications 15 SP6 | All versions | 26.2.1-150300.7.19.1 |
erlang SUSE:Linux Enterprise Module for Server Applications 15 SP7 | All versions | 23.3.4.19-150300.3.26.1 |
erlang26 SUSE:Linux Enterprise Module for Server Applications 15 SP7 | All versions | 26.2.1-150300.7.19.1 |
erlang SUSE:Linux Enterprise Server 15 SP3-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Server 15 SP4-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Server 15 SP5-LTSS | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Manager Proxy LTS 4.3 | All versions | 23.3.4.19-150300.3.26.1 |
erlang SUSE:Manager Server LTS 4.3 | All versions | 23.3.4.19-150300.3.26.1 |
erlang openSUSE:Leap 15.6 | All versions | 23.3.4.19-150300.3.26.1 |
erlang26 openSUSE:Leap 15.6 | All versions | 26.2.1-150300.7.19.1 |
How do I fix CVE-2025-48041?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-48041 being exploited?
There is no known exploitation of CVE-2025-48041 in the wild and no public exploit code.
Sources
Also known as AZL-67121, AZL-67124, DEBIAN-CVE-2025-48041, EEF-CVE-2025-48041, GHSA-79c4-cvv7-4qm3, OESA-2026-3651 and 4 more.