3.7
Low
CVE-2026-59842 Libssh: libssh: information disclosure via short gssapi curve25519 public key
Description
A flaw was found in libssh. During server-side GSSAPI key exchange, a client-supplied Curve25519 public key shorter than the expected length is copied without proper length validation, leading to an out-of-bounds heap read. This could allow a remote unauthenticated attacker to disclose small amounts of server memory.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:NExploitable remotely over the network, without an account and without any user action; the impact on data or service is limited.
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Hardened Images 0.12 | earliest → < 0.12.1-4.hum1 | 0.12.1-4.hum1 |
Other CVEs of Red Hat Enterprise Linux 10
The 1475 CVEs of Red Hat Enterprise Linux 10 →
CVE-2026-122056
Openscap: one-byte heap buffer overflow in sds-compose may lead to denial-of-service
5.9
Medium
CVE-2026-112314
Krb5: mit krb5 gss-rpc client memory leak on xid mismatch retries
7.5
High
CVE-2026-112321
Krb5: mit krb5 kadmind unauthenticated memory leak dos via auth_gssapi_init error paths
7.5
High
CVE-2026-112320
Krb5: mit krb5 kadmind unauthenticated memory leak dos via gss-rpc auth flavor switching
7.5
High