CVE-2026-59842: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 10
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.
CVE-2026-59842: Out-of-bounds Read in Red Hat Red Hat Enterprise Linux 10
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 v3.1
Score 3.7low
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2026-07-07T15:40:24.560Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/security/cve/CVE-2026-59842","vendor":"Red Hat"}]
Threat ID: 6a5f5b1f2a4a8d59890f971f
Added to database: 07/21/2026, 11:42:23 UTC
Last updated: 07/21/2026, 11:42:23 UTC
Views: 1
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