What’s Vulnerable › Vulnerabilities

CVE-2017-20006

• 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

UnRAR 5.6.1.2 and 5.6.1.3 has a heap-based buffer overflow in Unpack::CopyString (called from Unpack::Unpack5 and CmdExtract::ExtractCurrentFile).

Affected products

• RARLAB UnRAR: 5.6.1.2, 5.6.1.3

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4373
• https://github.com/aawc/unrar/commit/0ff832d31470471803b175cfff4e40c1b08ee779
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/unrar/OSV-2017-104.yaml
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=4373
• https://github.com/aawc/unrar/commit/0ff832d31470471803b175cfff4e40c1b08ee779
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/unrar/OSV-2017-104.yaml

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