CVE-2015-8879

Status: ModifiedHigh (7.5)—

Severity7.5High · CVSS 3.1

Exploitation probability3.46 %higher than 89% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

The odbc_bindcols function in ext/odbc/php_odbc.c in PHP before 5.6.12 mishandles driver behavior for SQL_WVARCHAR columns, which allows remote attackers to cause a denial of service (application crash) in opportunistic circumstances by leveraging use of the odbc_fetch_array function to access a certain type of Microsoft SQL Server table.

CVSS

Base score: 7.5
Version: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 3.46 %
Percentile among all scored CVEs: 89
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).

Affected technologies (1)

PHP — PHP

CWEs

CWE-20

References

Show 6 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2015-8879",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": true,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
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    "cvssMetricV31": [
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
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  "affected": [
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  "published": "2016-05-22T01:59:11.273",
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      "url": "http://rhn.redhat.com/errata/RHSA-2016-2750.html",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-20"
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  "descriptions": [
    {
      "lang": "en",
      "value": "The odbc_bindcols function in ext/odbc/php_odbc.c in PHP before 5.6.12 mishandles driver behavior for SQL_WVARCHAR columns, which allows remote attackers to cause a denial of service (application crash) in opportunistic circumstances by leveraging use of the odbc_fetch_array function to access a certain type of Microsoft SQL Server table."
    },
    {
      "lang": "es",
      "value": "La función odbc_bindcols en ext/odbc/php_odbc.c en PHP en versiones anteriores a 5.6.12 no maneja correctamente el comportamiento del controlador para columnas SQL_WVARCHAR, lo que permite a atacantes remotos provocar una denegación del servicio (caída de aplicación) en circunstancias oportunas aprovechando el uso de la función odbc_fetch_array para acceder a determinado tipo de tablas Microsoft SQL Server."
    }
  ],
  "lastModified": "2026-06-17T00:35:25.707",
  "configurations": [
    {
      "nodes": [
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          "negate": false,
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  "sourceIdentifier": "cve@mitre.org"
}