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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-13470 Detail

Description

In RNP version 0.18.0 a refactoring regression causes the symmetric session key used for Public-Key Encrypted Session Key (PKESK) packets to be left uninitialized except for zeroing, resulting in it always being an all-zero byte array. Any data encrypted using public-key encryption in this release can be decrypted trivially by supplying an all-zero session key, fully compromising confidentiality. The vulnerability affects only public key encryption (PKESK packets).  Passphrase-based encryption (SKESK packets) is not affected. Root cause: Vulnerable session key buffer used in PKESK packet generation. The defect was introduced in commit `7bd9a8dc356aae756b40755be76d36205b6b161a` where initialization logic inside `encrypted_build_skesk()` only randomized the key for the SKESK path and omitted it for the PKESK path.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Ribose Limited
CVSS-BT 7.7 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:Y/RE:H/U:Red

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/security/cve/cve-2025-13402 Ribose Limited
https://aur.archlinux.org/packages/rnp Ribose Limited
https://bugzilla.redhat.com/show_bug.cgi?id=2415863 Ribose Limited
https://github.com/rnpgp/rnp/commit/7bd9a8dc356aae756b40755be76d36205b6b161a Ribose Limited
https://github.com/rnpgp/rnp/releases/tag/v0.18.1 Ribose Limited
https://launchpad.net/ubuntu/+source/rnp Ribose Limited
https://open.ribose.com/advisories/ra-2025-11-20/ Ribose Limited
https://packages.gentoo.org/packages/dev-util/librnp Ribose Limited

Weakness Enumeration

CWE-ID CWE Name Source
CWE-330 Use of Insufficiently Random Values Ribose Limited  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-13470
NVD Published Date:
11/21/2025
NVD Last Modified:
11/21/2025
Source:
Ribose Limited