CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
15.5%
phpseclib/phpseclib is vulnerable to a Denial Of Service (DoS). The vulnerability is due to a flaw in handling malformed certificates in the phpseclib/Math/BigInteger.php file by using the method isPrime(). It allows an attacker to trigger excessive CPU consumption during the isPrime primality check.