CVE-2021-33198
CVSS v3
7.5
HIGH
EPSS Score
3.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method.
Technical details
- Published
- 2021-08-02
Frequently asked questions
What is CVE-2021-33198?
In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method.
Is CVE-2021-33198 actively exploited?
Active exploitation of CVE-2021-33198 has not been confirmed. Its EPSS score was 3.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-33198?
CVE-2021-33198 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2021-33198 affecting your environment?
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