CVE-2025-11346

ILIAS Base64 Decoding unserialize deserialization

Published Oct 6, 2025 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

ILIAS

affected

Version	Status	Constraints
`8.0`	affected	—
`8.1`	affected	—
`8.2`	affected	—
`8.3`	affected	—
`8.4`	affected	—
`8.5`	affected	—
`8.6`	affected	—
`8.7`	affected	—
`8.8`	affected	—
`8.9`	affected	—
`8.10`	affected	—
`8.11`	affected	—
`8.12`	affected	—
`8.13`	affected	—
`8.14`	affected	—
`8.15`	affected	—
`8.16`	affected	—
`8.17`	affected	—
`8.18`	affected	—
`8.19`	affected	—
`8.20`	affected	—
`8.21`	affected	—
`8.22`	affected	—
`8.23`	affected	—
`9.0`	affected	—
`9.1`	affected	—
`9.2`	affected	—
`9.3`	affected	—
`9.4`	affected	—
`9.5`	affected	—
`9.6`	affected	—
`9.7`	affected	—
`9.8`	affected	—
`9.9`	affected	—
`9.10`	affected	—
`9.11`	affected	—
`9.12`	affected	—
`9.13`	affected	—
`10.0`	affected	—
`10.1`	affected	—
`8.24`	unaffected	—
`9.14`	unaffected	—
`10.2`	unaffected	—

Configuration 1 [-]

OR	cpe:2.3:a:ilias:ilias:8.23:::::::*
	cpe:2.3:a:ilias:ilias:9.13:::::::*
	cpe:2.3:a:ilias:ilias:10.1:::::::*

No data.

Vendor	Product	Versions
Ilias	Ilias	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

Source	ID	Title
EUVD	EUVD-2025-32586	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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.453% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://srlabs.de/blog/breaking-ilias-part-2-three-to-rce
https://vuldb.com/?ctiid.327231
https://vuldb.com/?id.327231
https://vuldb.com/?submit.664892
https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2113

History

Feb 24, 2026 7:00 AM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:ilias:ilias::::::::

Jan 23, 2026 7:30 PM Added references View changes

Type	Values Removed	Values Added
References		https://srlabs.de/blog/breaking-ilias-part-2-three-to-rce

Oct 14, 2025 7:45 PM Affected versions updated View changes

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:ilias:ilias:10.1:::::::* cpe:2.3:a:ilias:ilias:8.23:::::::* cpe:2.3:a:ilias:ilias:9.13:::::::*

Oct 8, 2025 1:45 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Ilias Ilias ilias
Vendors & Products		Ilias Ilias ilias

Oct 6, 2025 8:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Oct 6, 2025 7:45 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		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.
Title		ILIAS Base64 Decoding unserialize deserialization
Weaknesses		CWE-20 CWE-502
References		https://vuldb.com/?ctiid.327231 https://vuldb.com/?id.327231 https://vuldb.com/?submit.664892 https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2113
Metrics		cvssV2_0 `{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:OF/RC:C'}` cvssV3_0 `{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C'}` cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X'}`