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CVE-2025-13470— RNP 0.18.0 Vulnerable PKESK session keys

Quick assessment

Affected
Ribose RNP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RNP是RNP开源的一个C++库。 RNP 0.18.0版本存在安全漏洞，该漏洞源于PKESK数据包中使用的对称会话密钥未初始化，可能导致完全破坏机密性。

CVSS 7.5 · High EPSS 0.30% · P23

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-13470

Vulnerability Information
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Vulnerability Title
RNP 0.18.0 Vulnerable PKESK session keys
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用不充分的随机数
Source: CVE Program / CVE List V5
Vulnerability Title
RNP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RNP是RNP开源的一个C++库。 RNP 0.18.0版本存在安全漏洞，该漏洞源于PKESK数据包中使用的对称会话密钥未初始化，可能导致完全破坏机密性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Ribose RNP 0.18.0 -

II. Public POCs for CVE-2025-13470

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9042 chars
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III. Intelligence Information for CVE-2025-13470

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Vendor Advisories for CVE-2025-13470 (1)

IV. Related Vulnerabilities

Same weakness: CWE-330

V. Comments for CVE-2025-13470

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