CVE-2016-4073

critical
Published 2016-05-20 ยท Modified 2026-05-06
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
9.8

Description

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.

Predictions

Exploit likelihood
97%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

macos macOS Affected 1 release
VersionStatusFixed in
โ€” Affected โ€”
suse SUSE Affected 1 release
VersionStatusFixed in
โ€” Affected โ€”

Application impact

VendorProductVersionsFixed
php phpphp5.5.0
php phpphp5.5.1
php phpphp5.5.2
php phpphp5.5.3
php phpphp5.5.4
php phpphp5.5.5
php phpphp5.5.6
php phpphp5.5.7
php phpphp5.5.8
php phpphp5.5.9
php phpphp5.5.10
php phpphp5.5.11
php phpphp5.5.12
php phpphp5.5.13
php phpphp5.5.14
php phpphp5.5.18
php phpphp5.5.19
php phpphp5.5.20
php phpphp5.5.21
php phpphp5.5.22
php phpphp5.5.23
php phpphp5.5.24
php phpphp5.5.25
php phpphp5.5.26
php phpphp5.5.27
php phpphp5.5.29
php phpphp5.5.30
php phpphp5.5.32
php phpphp5.5.33
php phpphp5.6.0
php phpphp5.6.1
php phpphp5.6.2
php phpphp5.6.3
php phpphp5.6.4
php phpphp5.6.5
php phpphp5.6.6
php phpphp5.6.7
php phpphp5.6.8
php phpphp5.6.9
php phpphp5.6.10
php phpphp5.6.11
php phpphp5.6.12
php phpphp5.6.13
php phpphp5.6.14
php phpphp5.6.15
php phpphp5.6.16
php phpphp5.6.17
php phpphp5.6.18
php phpphp5.6.19
php phpphp7.0.0
php phpphp7.0.1
php phpphp7.0.2
php phpphp7.0.3
php phpphp7.0.4

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.