CVE-2020-24159: NetEase Youdao Dictionary has a DLL hijacking vulnerability, which can be exploited by attackers to gain serve

Routine

HIGH 7.8DOWNGRADE

CVE-2020-24159 is a high-severity flaw (CVSS 7.8) affecting netease youdao dictionary. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NetEase Youdao Dictionary has a DLL hijacking vulnerability, which can be exploited by attackers to gain server permissions. This affects Guangzhou NetEase Youdao Dictionary 8.9.2.0.

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 youdao dictionary DOWNGRADE

Affected: 8.9.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.9.2.0

1. Check installed version

apt-cache policy netease-youdao-dictionary || rpm -q netease-youdao-dictionary || netease-youdao-dictionary --version

2. No fixed release: DOWNGRADE to a release before 8.9.2.0 (Debian / Ubuntu)

apt-cache madison netease-youdao-dictionary sudo apt install netease-youdao-dictionary=<VERSION_BEFORE_8.9.2.0> sudo apt-mark hold netease-youdao-dictionary

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

dnf --showduplicates list netease-youdao-dictionary sudo dnf downgrade netease-youdao-dictionary-<VERSION_BEFORE_8.9.2.0> sudo dnf versionlock add netease-youdao-dictionary

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-2020-24159?

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

Is CVE-2020-24159 being exploited?

CVE-2020-24159 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-2020-24159 affect?

CVE-2020-24159 affects netease youdao dictionary. Severity is high (CVSS 7.8). NetEase Youdao Dictionary has a DLL hijacking vulnerability, which can be exploited by attackers to gain server permissions. This affects Guangzhou NetEase Youdao Dictionary 8.9.2.0.

How urgent is CVE-2020-24159?

Priority 36/100. High severity

References

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