CVE-2020-11520: The SDDisk2k.sys driver of WinMagic SecureDoc v8.5 and earlier allows local users to write to arbitrary kernel

Q: How do I fix CVE-2020-11520?

securedoc: upgrade to newer than 8.5. Exact commands for each OS are on this page.

Q: Is CVE-2020-11520 being exploited?

CVE-2020-11520 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-11520 affect?

CVE-2020-11520 affects securedoc. Severity is high (CVSS 7.8). The SDDisk2k.sys driver of WinMagic SecureDoc v8.5 and earlier allows local users to write to arbitrary kernel memory addresses because the IOCTL dispatcher lacks pointer validation. Exploiting this vulnerability results in privileged code

Routine

HIGH 7.8UPGRADE

CVE-2020-11520 is a high-severity flaw (CVSS 7.8) affecting securedoc. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SDDisk2k.sys driver of WinMagic SecureDoc v8.5 and earlier allows local users to write to arbitrary kernel memory addresses because the IOCTL dispatcher lacks pointer validation. Exploiting this vulnerability results in privileged code execution.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 64%)
CISA exploited list	No
Weakness	CWE-119
Published	2020-06-22
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: winmagic

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-06-22 18:15 UTCPublished CVE record published
2026-06-17 02:50 UTCUpdated Record last modified

winmagic securedoc UPGRADE

Affected: <= 8.5

Fixed in: newer than 8.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy securedoc || rpm -q securedoc || securedoc --version

2. UPGRADE to newer than 8.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade securedoc

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade securedoc

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-11520?

securedoc: upgrade to newer than 8.5. Exact commands for each OS are on this page.

Is CVE-2020-11520 being exploited?

CVE-2020-11520 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-11520 affect?

CVE-2020-11520 affects securedoc. Severity is high (CVSS 7.8). The SDDisk2k.sys driver of WinMagic SecureDoc v8.5 and earlier allows local users to write to arbitrary kernel memory addresses because the IOCTL dispatcher lacks pointer validation. Exploiting this vulnerability results in privileged code

How urgent is CVE-2020-11520?

Priority 36/100. High severity

Related CVEs

CVE-2020-11519 HIGH 7.8 UPGRADE The SDDisk2k.sys driver of WinMagic SecureDoc v8.5 and earlier allows local users to read or write to physical

References

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