CVE-2025-30356Public exploitNetwork attack vector

Heap corruption via underflowed frame payload length

Published Apr 1, 2025 · Updated Apr 2, 2025

Heap buffer overflow in NASA CryptoLib 1.3.3 and earlier allows remote attackers to corrupt memory via crafted TC frames. Crypto_TC_ApplySecurity_Cam subtracts header lengths from the untrusted fl field, stores a negative payload length as uint16_t, and passes the resulting large value to memcpy. Reachability requires a consuming application to pass attacker-controlled TC frames into the function; heap corruption causes a crash, while code execution depends on memory layout and protections.

CVSS severity9.3
Critical
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in NASA CryptoLib 1.3.3 and earlier allows remote attackers to corrupt memory via crafted TC frames. Crypto_TC_ApplySecurity_Cam subtracts header lengths from the untrusted fl field, stores a negative payload length as uint16_t, and passes the resulting large value to memcpy. Reachability requires a consuming application to pass attacker-controlled TC frames into the function; heap corruption causes a crash, while code execution depends on memory layout and protections.

The record

CVE
CVE-2025-30356
Published
Apr 1, 2025
Updated
Apr 2, 2025
Vendor
NASA
Product
CryptoLib
Classifications
CWE-787, CWE-191
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=<= 1.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NASA · CryptoLibversion=<= 1.3.3

Published CVSS scores

9.3GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-191Integer Underflow (Wrap or Wraparound)

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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