#VU120975 Cryptographic issues in libsodium - CVE-2025-69277
Published: January 6, 2026
Vulnerability identifier: #VU120975
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-69277
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libsodium
libsodium
Software vendor:
jedisct1 (Frank Denis)
jedisct1 (Frank Denis)
Description
The vulnerability allows a remote attacker to read or manipulate encrypted data.
The vulnerability exists due to an error within the ge25519_is_on_main_subgroup() function in src/libsodium/crypto_core/ed25519/ref10/ed25519_ref10.c in atypical use cases involving certain custom cryptography or untrusted data passed to crypto_core_ed25519_is_valid_point(). A remote attacker can read or manipulate encrypted data.
Remediation
Install updates from vendor's website.