CVE-2021-21871

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-29 · updated 2026-06-17
Weakness: CWE-787

Description

A memory corruption vulnerability exists in the DMG File Format Handler functionality of PowerISO 7.9. A specially crafted DMG file can lead to an out-of-bounds write. An attacker can provide a malicious file to trigger this vulnerability. The vendor fixed it in a bug-release of the current version.

Affected products

PowerISO: 7.9

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1308
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1308

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