CVE-2025-8736 (GCVE-0-2025-8736)
Vulnerability from cvelistv5
Published
2025-08-08 19:02
Modified
2025-08-08 19:15
Severity ?
1.9 (Low) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.3 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RC:R
5.3 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RC:R
CWE
Summary
A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.
References
Impacted products
Vendor Product Version
GNU cflow Version: 1.0
Version: 1.1
Version: 1.2
Version: 1.3
Version: 1.4
Version: 1.5
Version: 1.6
Version: 1.7
Version: 1.8
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-8736",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-08-08T19:15:39.789983Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-08-08T19:15:48.325Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "Lexer"
          ],
          "product": "cflow",
          "vendor": "GNU",
          "versions": [
            {
              "status": "affected",
              "version": "1.0"
            },
            {
              "status": "affected",
              "version": "1.1"
            },
            {
              "status": "affected",
              "version": "1.2"
            },
            {
              "status": "affected",
              "version": "1.3"
            },
            {
              "status": "affected",
              "version": "1.4"
            },
            {
              "status": "affected",
              "version": "1.5"
            },
            {
              "status": "affected",
              "version": "1.6"
            },
            {
              "status": "affected",
              "version": "1.7"
            },
            {
              "status": "affected",
              "version": "1.8"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used."
        },
        {
          "lang": "de",
          "value": "Eine kritische Schwachstelle wurde in GNU cflow bis 1.8 entdeckt. Dies betrifft die Funktion yylex der Datei c.c der Komponente Lexer. Dank Manipulation mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff muss lokal passieren. Der Exploit steht zur \u00f6ffentlichen Verf\u00fcgung."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 4.3,
            "vectorString": "AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-08-08T19:02:06.444Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-319232 | GNU cflow Lexer c.c yylex buffer overflow",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.319232"
        },
        {
          "name": "VDB-319232 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.319232"
        },
        {
          "name": "Submit #622329 | GNU cflow  cflow  cflow (GNU cflow)  the newest master (0a19319e282506ff88d19e630380cd5069e893ed ) in cflow.git - GNU cflow Buffer Overflow",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.622329"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://lists.gnu.org/archive/html/bug-cflow/2025-07/msg00001.html"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://drive.google.com/file/d/17lkJ5bSiQZoXLTg3bK-rGBt3kahN9Xse/view?usp=drive_link"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://www.gnu.org/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2025-08-08T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2025-08-08T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2025-08-08T10:17:33.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "GNU cflow Lexer c.c yylex buffer overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2025-8736",
    "datePublished": "2025-08-08T19:02:06.444Z",
    "dateReserved": "2025-08-08T08:12:22.385Z",
    "dateUpdated": "2025-08-08T19:15:48.325Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-8736\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2025-08-08T19:15:37.557\",\"lastModified\":\"2025-08-08T20:30:18.180\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"LOW\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":1.8,\"impactScore\":3.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:S/C:P/I:P/A:P\",\"baseScore\":4.3,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.1,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"},{\"lang\":\"en\",\"value\":\"CWE-120\"}]}],\"references\":[{\"url\":\"https://drive.google.com/file/d/17lkJ5bSiQZoXLTg3bK-rGBt3kahN9Xse/view?usp=drive_link\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://lists.gnu.org/archive/html/bug-cflow/2025-07/msg00001.html\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/?ctiid.319232\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/?id.319232\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/?submit.622329\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://www.gnu.org/\",\"source\":\"cna@vuldb.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-8736\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-08-08T19:15:39.789983Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-08-08T19:15:44.564Z\"}}], \"cna\": {\"title\": \"GNU cflow Lexer c.c yylex buffer overflow\", \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 4.8, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 4.3, \"vectorString\": \"AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"vendor\": \"GNU\", \"modules\": [\"Lexer\"], \"product\": \"cflow\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.0\"}, {\"status\": \"affected\", \"version\": \"1.1\"}, {\"status\": \"affected\", \"version\": \"1.2\"}, {\"status\": \"affected\", \"version\": \"1.3\"}, {\"status\": \"affected\", \"version\": \"1.4\"}, {\"status\": \"affected\", \"version\": \"1.5\"}, {\"status\": \"affected\", \"version\": \"1.6\"}, {\"status\": \"affected\", \"version\": \"1.7\"}, {\"status\": \"affected\", \"version\": \"1.8\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2025-08-08T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2025-08-08T02:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2025-08-08T10:17:33.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/?id.319232\", \"name\": \"VDB-319232 | GNU cflow Lexer c.c yylex buffer overflow\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/?ctiid.319232\", \"name\": \"VDB-319232 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/?submit.622329\", \"name\": \"Submit #622329 | GNU cflow  cflow  cflow (GNU cflow)  the newest master (0a19319e282506ff88d19e630380cd5069e893ed ) in cflow.git - GNU cflow Buffer Overflow\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://lists.gnu.org/archive/html/bug-cflow/2025-07/msg00001.html\", \"tags\": [\"related\"]}, {\"url\": \"https://drive.google.com/file/d/17lkJ5bSiQZoXLTg3bK-rGBt3kahN9Xse/view?usp=drive_link\", \"tags\": [\"exploit\"]}, {\"url\": \"https://www.gnu.org/\", \"tags\": [\"product\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability, which was classified as critical, has been found in GNU cflow up to 1.8. Affected by this issue is the function yylex of the file c.c of the component Lexer. The manipulation leads to buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.\"}, {\"lang\": \"de\", \"value\": \"Eine kritische Schwachstelle wurde in GNU cflow bis 1.8 entdeckt. Dies betrifft die Funktion yylex der Datei c.c der Komponente Lexer. Dank Manipulation mit unbekannten Daten kann eine buffer overflow-Schwachstelle ausgenutzt werden. Der Angriff muss lokal passieren. Der Exploit steht zur \\u00f6ffentlichen Verf\\u00fcgung.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-120\", \"description\": \"Buffer Overflow\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"Memory Corruption\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2025-08-08T19:02:06.444Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-8736\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-08-08T19:15:48.325Z\", \"dateReserved\": \"2025-08-08T08:12:22.385Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2025-08-08T19:02:06.444Z\", \"assignerShortName\": \"VulDB\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.