CVE-2021-22948
CVSS v3
7.1
HIGH
EPSS Score
2.7 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.
Technical details
- Published
- 2021-09-23
Frequently asked questions
What is CVE-2021-22948?
Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.
Is CVE-2021-22948 actively exploited?
Active exploitation of CVE-2021-22948 has not been confirmed. Its EPSS score was 2.7% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-22948?
CVE-2021-22948 has a CVSS v3 base score of 7.1 (HIGH severity).
Is CVE-2021-22948 affecting your environment?
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