CVE-2025-52645: HCL AION is affected by a vulnerability where model packaging and distribution mechanisms may not include suff

Routine

LOW 1.9UPGRADE

CVE-2025-52645 is a low-severity flaw (CVSS 1.9) affecting aion. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

HCL AION is affected by a vulnerability where model packaging and distribution mechanisms may not include sufficient authenticity verification. This may allow the possibility of unverified or modified model artifacts being used, potentially leading to integrity concerns or unintended behaviour.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	1.9 (Low)
Attack vector	Local
Attack complexity	High
Privileges needed	High
User interaction	None
EPSS exploit chance	0.1% (top 100%)
CISA exploited list	No
Weakness	CWE-345
Published	2026-03-16
Last modified	2026-06-17

Publisher (CNA): HCL Software · Vendor: hcltech

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

Am I affected?

Timeline

2026-03-16 15:16 UTCPublished CVE record published
2026-06-17 09:36 UTCUpdated Record last modified

hcltech aion UPGRADE

Affected: >= 2.0.0 and < 2.1.2

Fixed in: 2.1.2

Safe to downgrade to: a release before 2.0.0

1. Check installed version

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

2. UPGRADE to 2.1.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade aion

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 2.0.0 (Debian / Ubuntu)

apt-cache madison aion sudo apt install aion=<VERSION_BEFORE_2.0.0> sudo apt-mark hold aion

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

dnf --showduplicates list aion sudo dnf downgrade aion-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add aion

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-2025-52645?

aion: upgrade to 2.1.2. Exact commands for each OS are on this page.

Is CVE-2025-52645 being exploited?

CVE-2025-52645 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-2025-52645 affect?

CVE-2025-52645 affects aion. Severity is low (CVSS 1.9). HCL AION is affected by a vulnerability where model packaging and distribution mechanisms may not include sufficient authenticity verification. This may allow the possibility of unverified or modified model artifacts being used, potentially

How urgent is CVE-2025-52645?

Priority 7/100. No elevated risk signals yet.

Related CVEs

CVE-2025-52641 LOW 2.9 UPGRADE HCL AION is affected by a vulnerability where certain system behaviours may allow exploration of internal file
CVE-2025-52649 LOW 1.8 UPGRADE HCL AION is affected by a vulnerability where certain identifiers may be predictable in nature
CVE-2025-52648 MEDIUM 4.8 UPGRADE HCL AION is affected by a vulnerability where offering images are not digitally signed
CVE-2025-52646 LOW 2.2 UPGRADE HCL AION is affected by a vulnerability where certain offering configurations may permit execution of potentia
CVE-2025-52644 MEDIUM 5.8 UPGRADE HCL AION is affected by a vulnerability where certain user actions are not adequately audited or logged

References

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