CVE-2026-67978Public exploitNetwork attack vector

Information disclosure via truncated frame expansion

Published Aug 3, 2026 · Updated Aug 3, 2026

Information disclosure in the SBN UDP interface in NASA cFS 7.0.1 allows remote attackers to read stale buffer data via a crafted frame. SBN.UnpackMsg omits the received byte count, and Unpack_Data validates the declared MsgSz only against fixed buffer capacity rather than actual datagram length. Exposure requires the SBN UDP path and TO_LAB forwarding; leaked output is limited to residual bytes present in reused receive buffers.

CVSS severity7.5
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in the SBN UDP interface in NASA cFS 7.0.1 allows remote attackers to read stale buffer data via a crafted frame. SBN.UnpackMsg omits the received byte count, and Unpack_Data validates the declared MsgSz only against fixed buffer capacity rather than actual datagram length. Exposure requires the SBN UDP path and TO_LAB forwarding; leaked output is limited to residual bytes present in reused receive buffers.

The record

CVE
CVE-2026-67978
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-400
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-400Uncontrolled Resource Consumption

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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