CVE-2020-24161: Guangzhou NetEase Mail Master 4.14.1.1004 on Windows has a DLL hijacking vulnerability

Routine

HIGH 7.8DOWNGRADE

CVE-2020-24161 is a high-severity flaw (CVSS 7.8) affecting netease mail master. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Guangzhou NetEase Mail Master 4.14.1.1004 on Windows has a DLL hijacking vulnerability. Attackers can use this vulnerability to execute malicious code.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-427
Published	2020-09-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: 163

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

Am I affected?

Timeline

2020-09-03 17:15 UTCPublished CVE record published
2026-06-17 03:05 UTCUpdated Record last modified

163 netease mail master DOWNGRADE

Affected: 4.14.1.1004

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.14.1.1004

1. Check installed version

apt-cache policy netease-mail-master || rpm -q netease-mail-master || netease-mail-master --version

2. No fixed release: DOWNGRADE to a release before 4.14.1.1004 (Debian / Ubuntu)

apt-cache madison netease-mail-master sudo apt install netease-mail-master=<VERSION_BEFORE_4.14.1.1004> sudo apt-mark hold netease-mail-master

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list netease-mail-master sudo dnf downgrade netease-mail-master-<VERSION_BEFORE_4.14.1.1004> sudo dnf versionlock add netease-mail-master

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-24161?

netease mail master: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-24161 being exploited?

CVE-2020-24161 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-2020-24161 affect?

CVE-2020-24161 affects netease mail master. Severity is high (CVSS 7.8). Guangzhou NetEase Mail Master 4.14.1.1004 on Windows has a DLL hijacking vulnerability. Attackers can use this vulnerability to execute malicious code.

How urgent is CVE-2020-24161?

Priority 36/100. High severity

Software pages

Windows vulnerabilities

References

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