CVE-2026-92159

Status: DeferredMedium (6.5)—

Severity6.5Medium · CVSS 3.1

Exploitation probability0.31 %higher than 22% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::TlmPacketizer TlmRecv_handler fixed-slot copy TlmRecv_handler copies val.getSize bytes into entry.channelSize storage without confirming that the runtime value fits. When a telemetry update for a configured channel carries a serialized value larger than that channel fixed slot, the copy overwrites adjacent channel fields and causes corrupted packetized telemetry to be emitted. This issue is fixed in version 4.3.0.

CVSS

Base score: 6.5
Version: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.31 %
Percentile among all scored CVEs: 22
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement80 %
Primary impactT1565 Data Manipulationimpact55 %

Vector AV:A/PR:N/UI:N con I:H; la copia sin comprobar de TlmRecv_handler sobrescribe campos adyacentes y emite telemetría empaquetada corrompida.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Network Segmentation Vulnerability Scanning Threat Intelligence Program Restrict File and Directory Permissions Privileged Account Management Remote Data Storage

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

F Prime — F Prime^AI

CWEs

CWE-130, CWE-805

References

Show 6 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-92159",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-92159",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-15T18:56:18.426514Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "nasa",
          "product": "fprime",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.3.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-14T18:19:35.360",
  "references": [
    {
      "url": "https://github.com/nasa/fprime/commit/048fe04062b91be7af138df7e09cdd15812dde96",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nasa/fprime/commit/7eacd551aaf6d9a21e347ac2c8d827ca15ee5755",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nasa/fprime/pull/4878",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nasa/fprime/releases/tag/v4.3.0a1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nasa/fprime/security/advisories/GHSA-grrq-8rmr-xf83",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nasa/fprime/security/advisories/GHSA-grrq-8rmr-xf83",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-130"
        },
        {
          "lang": "en",
          "value": "CWE-805"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "F´ (F Prime) is a framework that enables development and deployment of spaceflight and other embedded software applications. Prior to 4.3.0, Svc::TlmPacketizer TlmRecv_handler fixed-slot copy TlmRecv_handler copies val.getSize bytes into entry.channelSize storage without confirming that the runtime value fits. When a telemetry update for a configured channel carries a serialized value larger than that channel fixed slot, the copy overwrites adjacent channel fields and causes corrupted packetized telemetry to be emitted. This issue is fixed in version 4.3.0."
    }
  ],
  "lastModified": "2026-10-15T19:17:48.590",
  "sourceIdentifier": "security-advisories@github.com"
}