Libssh Libssh
CVE-2025-5351
A flaw was found in the key export functionality of libssh. The issue occurs in the internal function responsible for converting cryptographic keys into serialized formats. During error handling, a memory structure is freed but not cleared, leading to a potential double free issue if an additional failure occurs later in the function. This condition may result in heap corruption or application instability in low-memory scenarios, posing a risk to system reliability where key export operations are performed.
What this means for your business
- It affects Libssh. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Libssh, and which version. The affected versions are listed further down this page.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
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Scoring
- CVSS
- 6.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Weakness
- CWE-415
- Assigned by
- secalert@redhat.com
Dates
- Published
- 2025-07-04
- Last modified
- 2026-09-01
- Sources
- NVD
Affected products
- Libssh Libssh0.10.0 - 0.11.2
- Redhat Openshift Container Platform4.0
- Redhat Enterprise Linux6.0, 7.0, 8.0, 9.0, 10.0
As listed in the NVD configuration data. Not a statement about your estate.