CVE-2026-82480 (GCVE-0-2026-82480)

Vulnerability from cvelistv5 – Published: 2026-08-30 05:30 – Updated: 2026-08-30 05:30
VLAI
Title
NASA cFS cFE Software Bus cfe_sb_util.c CFE_SB_GetUserDataLength integer underflow
Summary
A security flaw has been discovered in NASA cFS up to 7.0.1. The affected element is the function CFE_SB_GetUserDataLength of the file src/cFS/cfe/modules/sb/fsw/src/cfe_sb_util.c of the component cFE Software Bus. Performing a manipulation of the argument TotalMsgSize/HdrSize results in integer underflow. It is possible to initiate the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X
7.4 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:X/RL:X/RC:R
7.4 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:X/RL:X/RC:R
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/397030 vdb-entrytechnical-description
https://vuldb.com/vuln/397030/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82480 third-party-advisory
https://vuldb.com/submit/888018 third-party-advisory
Impacted products
Vendor Product Version CPE status
NASA cFS Affected: 7.0.0
Affected: 7.0.1
    cpe:2.3:a:nasa:cfs:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
juntheworld (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:nasa:cfs:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "cFE Software Bus"
          ],
          "product": "cFS",
          "vendor": "NASA",
          "versions": [
            {
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              "version": "7.0.0"
            },
            {
              "status": "affected",
              "version": "7.0.1"
            }
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        }
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          "type": "reporter",
          "value": "juntheworld (VulDB User)"
        },
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        }
      ],
      "metrics": [
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          "tags": [
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        },
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          "name": "Submit #888018 | NASA cFS 7.0.1 Integer Underflow",
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          "value": "VulDB entry last update"
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      ],
      "title": "NASA cFS cFE Software Bus cfe_sb_util.c CFE_SB_GetUserDataLength integer underflow",
      "x_generator": [
        "VulDB PVTS v202608"
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    "datePublished": "2026-08-30T05:30:09.275Z",
    "dateReserved": "2026-08-29T14:40:28.151Z",
    "dateUpdated": "2026-08-30T05:30:09.275Z",
    "state": "PUBLISHED"
  },
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.