OOB Read in urldecode()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 4.3%
exploitation probability
4.3%top 10% of all CVEs
observed exploitation
nono source reports it
In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17 and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC support (uncommon), urldecode() function can be made to access locations past the allocated memory, due to erroneously using signed numbers as array indexes.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
PHP Group · PHPReferences
https://bugs.php.net/bug.php?id=79465https://security.netapp.com/advisory/ntap-20200504-0001/https://www.debian.org/security/2020/dsa-4717https://www.debian.org/security/2020/dsa-4719https://www.oracle.com/security-alerts/cpuApr2021.htmlhttps://www.oracle.com/security-alerts/cpuoct2020.htmlhttps://www.tenable.com/security/tns-2021-14