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CVE-2025-29912

Nasa Cryptolib remote code execution

9.8 CRITICALEPSS 1.12%
  1. Published17 Mar 2025

Description

CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. In versions 1.3.3 and prior, an unsigned integer underflow in the `Crypto_TC_ProcessSecurity` function of CryptoLib leads to a heap buffer overflow. The vulnerability is triggered when the `fl` (frame length) field in a Telecommand (TC) packet is set to 0. This underflow causes the frame length to be interpreted as 65535, resulting in out-of-bounds memory access. This critical vulnerability can be exploited to cause a denial of service (DoS) or potentially achieve remote code execution. Users of CryptoLib are advised to apply the recommended patch or avoid processing untrusted TC packets until a fix is available.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Nasa Cryptolib< 1.4.0

Remediation

Fixed in
Nasa Cryptolib≥ 1.4.0

Frequently asked

Is CVE-2025-29912 being actively exploited?

CVE-2025-29912 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.12%.

How severe is CVE-2025-29912?

CVE-2025-29912 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.12% probability of exploitation.

Which products are affected by CVE-2025-29912?

Affected products include Nasa Cryptolib.

How do I fix CVE-2025-29912?

Upgrade affected software to a fixed version, for example Nasa Cryptolib 1.4.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-29912 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.