CVE-2020-25459: An issue was discovered in function sync_tree in hetero_decision_tree_guest.py in WeBank FATE (Federated AI Te

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HIGH 7.5REMOTEUPGRADE

CVE-2020-25459 is a high-severity flaw (CVSS 7.5) affecting federated ai technology enabler. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in function sync_tree in hetero_decision_tree_guest.py in WeBank FATE (Federated AI Technology Enabler) 0.1 through 1.4.2 allows attackers to read sensitive information during the training process of machine learning joint modeling.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-668
Published	2022-06-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: webank

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

Am I affected?

Timeline

2022-06-16 21:15 UTCPublished CVE record published
2026-06-17 03:06 UTCUpdated Record last modified

webank federated ai technology enabler UPGRADE

Affected: >= 0.1 and <= 1.4.2

Fixed in: newer than 1.4.2

Safe to downgrade to: a release before 0.1

1. Check installed version

apt-cache policy federated-ai-technology-enabler || rpm -q federated-ai-technology-enabler || federated-ai-technology-enabler --version

2. UPGRADE to newer than 1.4.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade federated-ai-technology-enabler

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade federated-ai-technology-enabler

Note

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

3. If no update is available yet, DOWNGRADE to a release before 0.1 (Debian / Ubuntu)

apt-cache madison federated-ai-technology-enabler sudo apt install federated-ai-technology-enabler=<VERSION_BEFORE_0.1> sudo apt-mark hold federated-ai-technology-enabler

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list federated-ai-technology-enabler sudo dnf downgrade federated-ai-technology-enabler-<VERSION_BEFORE_0.1> sudo dnf versionlock add federated-ai-technology-enabler

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-2020-25459?

federated ai technology enabler: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Is CVE-2020-25459 being exploited?

CVE-2020-25459 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-2020-25459 affect?

CVE-2020-25459 affects federated ai technology enabler. Severity is high (CVSS 7.5). An issue was discovered in function sync_tree in hetero_decision_tree_guest.py in WeBank FATE (Federated AI Technology Enabler) 0.1 through 1.4.2 allows attackers to read sensitive information during the training process of machine learning

How urgent is CVE-2020-25459?

Priority 47/100. High severity; Remotely exploitable, no login, no user action

References

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