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CVE-2025-29909

Nasa Cryptolib remote code execution

9.8 CRITICALEPSS 1.08%
  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, a heap buffer overflow vulnerability in CryptoLib's `Crypto_TC_ApplySecurity()` allows an attacker to craft a malicious TC frame that causes out-of-bounds memory writes. This can result in denial of service (DoS) or, under certain conditions, remote code execution (RCE). Any application or system that relies on CryptoLib for Telecommand (TC) processing and does not strictly validate incoming TC frames is at risk. This includes satellite ground stations or mission control software where attackers can inject malformed frames. A patch is available at commit c7e8a8745ff4b5e9bd7e500e91358e86d5abedcc.

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-2025-29909 being actively exploited?

CVE-2025-29909 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.08%.

How severe is CVE-2025-29909?

CVE-2025-29909 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.08% probability of exploitation.

Which products are affected by CVE-2025-29909?

Affected products include Nasa Cryptolib.

How do I fix CVE-2025-29909?

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-2025-29909 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.