Critical
Security advisory
Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-4073
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:27 UTC · Revision 1
Source evidence
Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.
osv:CVE-2016-4073
Complete source record
{
"id": "aafd38e6a14ece85fe593285d38ee9f6c1b0a1e1e4193270820422ab5ac758ce",
"url": "https://osv.dev/vulnerability/CVE-2016-4073",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-4073",
"summary": "Multiple integer overflows in the mbfl_strcut function in ext/mbstring/libmbfl/mbfl/mbfilter.c in PHP before 5.5.34, 5.6.x before 5.6.20, and 7.x before 7.0.5 allow remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted mb_strcut call.",
"evidence": "osv:CVE-2016-4073",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-4073",
"aliases": [
"CVE-2016-4073"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "2c2d0de09e522fe097bfcebfb758171eb6aa5270"
},
{
"last_affected": "e09845d32614a19188632f410316478fbb440ebd"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:5.5.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0"
},
{
"last_affected": "5.5.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha1"
},
{
"last_affected": "5.5.0-alpha1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha2"
},
{
"last_affected": "5.5.0-alpha2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha3"
},
{
"last_affected": "5.5.0-alpha3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha4:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha4"
},
{
"last_affected": "5.5.0-alpha4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha5:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha5"
},
{
"last_affected": "5.5.0-alpha5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:alpha6:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-alpha6"
},
{
"last_affected": "5.5.0-alpha6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-beta1"
},
{
"last_affected": "5.5.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-beta2"
},
{
"last_affected": "5.5.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-beta3"
},
{
"last_affected": "5.5.0-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:beta4:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-beta4"
},
{
"last_affected": "5.5.0-beta4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:rc1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-rc1"
},
{
"last_affected": "5.5.0-rc1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.0:rc2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.0-rc2"
},
{
"last_affected": "5.5.0-rc2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.1"
},
{
"last_affected": "5.5.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.2"
},
{
"last_affected": "5.5.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.3"
},
{
"last_affected": "5.5.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.4"
},
{
"last_affected": "5.5.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.5"
},
{
"last_affected": "5.5.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.6"
},
{
"last_affected": "5.5.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.7"
},
{
"last_affected": "5.5.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.8"
},
{
"last_affected": "5.5.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.9"
},
{
"last_affected": "5.5.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.10"
},
{
"last_affected": "5.5.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.11"
},
{
"last_affected": "5.5.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.12"
},
{
"last_affected": "5.5.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.13"
},
{
"last_affected": "5.5.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.14"
},
{
"last_affected": "5.5.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.18"
},
{
"last_affected": "5.5.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.19"
},
{
"last_affected": "5.5.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.20:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.20"
},
{
"last_affected": "5.5.20"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.21:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.21"
},
{
"last_affected": "5.5.21"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.22:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.22"
},
{
"last_affected": "5.5.22"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.23:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.23"
},
{
"last_affected": "5.5.23"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.24:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.24"
},
{
"last_affected": "5.5.24"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.25:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.25"
},
{
"last_affected": "5.5.25"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.26:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.26"
},
{
"last_affected": "5.5.26"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.27:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.27"
},
{
"last_affected": "5.5.27"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.29:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.29"
},
{
"last_affected": "5.5.29"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.30:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.30"
},
{
"last_affected": "5.5.30"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.32:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.32"
},
{
"last_affected": "5.5.32"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.5.33:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.5.33"
},
{
"last_affected": "5.5.33"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0"
},
{
"last_affected": "5.6.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha1"
},
{
"last_affected": "5.6.0-alpha1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha2"
},
{
"last_affected": "5.6.0-alpha2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha3"
},
{
"last_affected": "5.6.0-alpha3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta1"
},
{
"last_affected": "5.6.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta2"
},
{
"last_affected": "5.6.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta3"
},
{
"last_affected": "5.6.0-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta4"
},
{
"last_affected": "5.6.0-beta4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.1"
},
{
"last_affected": "5.6.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.2"
},
{
"last_affected": "5.6.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.3"
},
{
"last_affected": "5.6.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.4"
},
{
"last_affected": "5.6.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.5"
},
{
"last_affected": "5.6.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.6"
},
{
"last_affected": "5.6.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.7"
},
{
"last_affected": "5.6.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.8"
},
{
"last_affected": "5.6.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.9"
},
{
"last_affected": "5.6.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.10"
},
{
"last_affected": "5.6.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.11"
},
{
"last_affected": "5.6.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.12"
},
{
"last_affected": "5.6.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.13"
},
{
"last_affected": "5.6.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.14"
},
{
"last_affected": "5.6.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.15"
},
{
"last_affected": "5.6.15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.16"
},
{
"last_affected": "5.6.16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.17"
},
{
"last_affected": "5.6.17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.18"
},
{
"last_affected": "5.6.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.19"
},
{
"last_affected": "5.6.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:7.0.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.0"
},
{
"last_affected": "7.0.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:7.0.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.1"
},
{
"last_affected": "7.0.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:7.0.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.2"
},
{
"last_affected": "7.0.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:7.0.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.3"
},
{
"last_affected": "7.0.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:7.0.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.4"
},
{
"last_affected": "7.0.4"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.5.0",
"5.5.0-alpha1",
"5.5.0-alpha2",
"5.5.0-alpha3",
"5.5.0-alpha4",
"5.5.0-alpha5",
"5.5.0-alpha6",
"5.5.0-beta1",
"5.5.0-beta2",
"5.5.0-beta3",
"5.5.0-beta4",
"5.5.0-rc1",
"5.5.0-rc2",
"5.5.1",
"5.5.10",
"5.5.11",
"5.5.12",
"5.5.13",
"5.5.14",
"5.5.18",
"5.5.19",
"5.5.2",
"5.5.20",
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"5.5.22",
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"5.6.0-alpha2",
"5.6.0-alpha3",
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"5.6.0-beta4",
"5.6.1",
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"7.0.3",
"7.0.4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-4073.json"
}
}
],
"modified": "2026-10-24T10:30:39.823150145Z",
"provider": "osv",
"references": [
"https://gist.github.com/smalyshev/d8355c96a657cc5dba70",
"https://git.php.net/?p=php-src.git%3Ba=commit%3Bh=64f42c73efc58e88671ad76b6b6bc8e2b62713e1",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731",
"https://support.apple.com/HT206567",
"https://security.gentoo.org/glsa/201611-22",
"https://bugs.php.net/bug.php?id=71906"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*"
],
"vendor_product": "apple:mac_os_x",
"extracted_events": [
{
"range": [
{
"last_affected": "10.11.3"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:*",
"cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:*"
],
"vendor_product": "php:php",
"extracted_events": [
{
"range": [
{
"introduced": "5.6.0-alpha4"
},
{
"last_affected": "5.6.0-alpha4"
},
{
"introduced": "5.6.0-alpha5"
},
{
"last_affected": "5.6.0-alpha5"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-4073",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434758,
"published_at": "2016-05-20T11:00:18.037+00:00"
}