CVE-2025-13470

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Source
https://cve.org/CVERecord?id=CVE-2025-13470
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-13470.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-13470
Downstream
DEBIAN (1)
openSUSE (2)
UBUNTU (1)
Related
openSUSE (2)
Published
2025-11-21T17:05:15Z
Modified
2026-10-28T02:53:53Z
Severity
  • 7.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
RNP 0.18.0 Vulnerable PKESK session keys
Details

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.

Database specific 
{
    "cna_assigner":  "Ribose",
    "cwe_ids":  [
        "CWE-330"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13470.json"
}
References

Affected packages

Git / github.com/rnpgp/rnp

Affected ranges

Type
GIT
Repo
https://github.com/rnpgp/rnp
Events
Introduced
bf89f0bad177e69cb12a93107b46ebc456b21031
Fixed
7bd9a8dc356aae756b40755be76d36205b6b161a
Fixed
aad1892e4d8423398a0b973bd0a7e4544c359afc
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0.18.0"
                },
                {
                    "last_affected":  "0.18.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "7bd9a8dc356aae756b40755be76d36205b6b161a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v0.18.1",
            "range":  [
                {
                    "fixed":  "aad1892e4d8423398a0b973bd0a7e4544c359afc"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.18.0
v0.*
v0.18.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-13470.json"