What’s Vulnerable › Vulnerabilities

CVE-2021-36089

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-01 · updated 2026-06-17
• Weakness: CWE-787

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).

Affected products

• zope Grok: from 7.6.6 through 9.2.0

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33544
• https://github.com/GrokImageCompression/grok/releases
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/grok/OSV-2021-677.yaml
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33544
• https://github.com/GrokImageCompression/grok/releases
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/grok/OSV-2021-677.yaml

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