CVE-2023-46049

Status: DeferredMedium (5.3)—

Severity5.3Medium · CVSS 3.1

Exploitation probability0.68 %higher than 52% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

LLVM 15.0.0 has a NULL pointer dereference in the parseOneMetadata() function via a crafted pdflatex.fmt file (or perhaps a crafted .o file) to llvm-lto. NOTE: this is disputed because the relationship between pdflatex.fmt and any LLVM language front end is not explained, and because a crash of the llvm-lto application should be categorized as a usability problem.

CVSS

Base score: 5.3
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.68 %
Percentile among all scored CVEs: 52
Score date: 10/21/2026

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).

Affected technologies (1)

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

Llvm — Llvm^AI

CWEs

CWE-476

References

Show 7 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2023-46049",
  "cveTags": [
    {
      "tags": [
        "disputed"
      ],
      "sourceIdentifier": "cve@mitre.org"
    }
  ],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-46049",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-07-10T15:47:36.217196Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2024-03-27T06:15:10.037",
  "references": [
    {
      "url": "http://seclists.org/fulldisclosure/2024/Jan/66",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/llvm/llvm-project/issues/67388",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://llvm.org/docs/Security.html",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://packetstormsecurity.com/files/176820/llvm-LLVM-15-Null-Pointer.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://seclists.org/fulldisclosure/2024/Jan/66",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/llvm/llvm-project/issues/67388",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://llvm.org/docs/Security.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "LLVM 15.0.0 has a NULL pointer dereference in the parseOneMetadata() function via a crafted pdflatex.fmt file (or perhaps a crafted .o file) to llvm-lto. NOTE: this is disputed because the relationship between pdflatex.fmt and any LLVM language front end is not explained, and because a crash of the llvm-lto application should be categorized as a usability problem."
    },
    {
      "lang": "es",
      "value": "LLVM 15.0.0 tiene una desreferencia de puntero NULL en la función parseOneMetadata() a través de un archivo pdflatex.fmt modificado (o quizás un archivo .o modificado) a llvm-lto. NOTA: esto está en disputa porque no se explica la relación entre pdflatex.fmt y cualquier interfaz de lenguaje LLVM, y porque una falla de la aplicación llvm-lto debe clasificarse como un problema de usabilidad."
    }
  ],
  "lastModified": "2026-06-17T06:29:56.563",
  "sourceIdentifier": "cve@mitre.org"
}