CVE-2025-11346: A vulnerability has been found in ILIAS up to 8.23/9.13/10.1

Routine

MEDIUM 6.3DOWNGRADE

CVE-2025-11346 is a medium-severity flaw (CVSS 6.3) affecting ilias. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the component Base64 Decoding Handler. Such manipulation of the argument f_settings leads to deserialization. It is possible to launch the attack remotely. Upgrading to version 8.24, 9.14 and 10.2 is able to mitigate this issue. It is advisable to upgrade the affected component.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-20, CWE-502
Published	2025-10-06
Last modified	2026-10-19

Publisher (CNA): VulDB · Vendor: ilias

Last updated 2026-10-19 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-10-06 20:15 UTCPublished CVE record published
2026-10-19 16:10 UTCUpdated Record last modified

ilias ilias DOWNGRADE

Affected: 8.23 · 9.13 · 10.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.23

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 8.23 (Debian / Ubuntu)

apt-cache madison ilias sudo apt install ilias=<VERSION_BEFORE_8.23> sudo apt-mark hold ilias

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

dnf --showduplicates list ilias sudo dnf downgrade ilias-<VERSION_BEFORE_8.23> sudo dnf versionlock add ilias

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-2025-11346?

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

Is CVE-2025-11346 being exploited?

CVE-2025-11346 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-2025-11346 affect?

CVE-2025-11346 affects ilias. Severity is medium (CVSS 6.3). A vulnerability has been found in ILIAS up to 8.23/9.13/10.1. This affects the function unserialize of the component Base64 Decoding Handler. Such manipulation of the argument f_settings leads to deserialization. It is possible to launch th

How urgent is CVE-2025-11346?

Priority 32/100. No elevated risk signals yet.

Related CVEs

CVE-2025-11344 MEDIUM 6.3 DOWNGRADE A vulnerability was detected in ILIAS up to 8.23/9.13/10.1
CVE-2025-11345 MEDIUM 5.5 DOWNGRADE A flaw has been found in ILIAS up to 8.23/9.13/10.1
CVE-2024-33529 HIGH 7.2 UPGRADE ILIAS 7 before 7.30 and ILIAS 8 before 8.11 as well as ILIAS 9.0 allow remote authenticated attackers with adm
CVE-2024-33528 MEDIUM 4.7 UPGRADE A Stored Cross-site Scripting (XSS) vulnerability in ILIAS 7 before 7.30 and ILIAS 8 before 8.11 allows remote
CVE-2024-33527 MEDIUM 5.4 UPGRADE A Stored Cross-site Scripting (XSS) vulnerability in the "Import of Users and login name of user" feature in I

References

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