CVE-2021-36089
CVSS v3
7.8
HIGH
EPSS Score
1.2 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).
Technical details
- Published
- 2021-07-01
Frequently asked questions
What is CVE-2021-36089?
Grok 7.6.6 through 9.2.0 has a heap-based buffer overflow in grk::FileFormatDecompress::apply_palette_clr (called from grk::FileFormatDecompress::applyColour).
Is CVE-2021-36089 actively exploited?
Active exploitation of CVE-2021-36089 has not been confirmed. Its EPSS score was 1.2% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-36089?
CVE-2021-36089 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-36089 affecting your environment?
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