Microsoft Windows up to Server 2025 Kerberos information disclosure

CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.8 | $5k-$25k | 0.00 |
A vulnerability was found in Microsoft Windows. It has been classified as problematic. Affected is some unknown processing of the component Kerberos. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.
The weakness was released 01/14/2025 as confirmed security update guide (Website). The advisory is shared for download at msrc.microsoft.com. This vulnerability is traded as CVE-2025-21242. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 01/25/2025). The MITRE ATT&CK project declares the attack technique as T1592.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Type
Vendor
Name
Version
- 10
- 10 21H2
- 10 22H2
- 10 1607
- 10 1809
- 11 22H2
- 11 23H2
- 11 24H2
- Server 2008 R2 SP1
- Server 2012
- Server 2012 R2
- Server 2016
- Server 2019
- Server 2022
- Server 2022 23H2
- Server 2025
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.2VulDB Meta Temp Score: 4.8
VulDB Base Score: 3.7
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍
Vendor Base Score (Microsoft): 5.9
Vendor Vector (Microsoft): 🔒
CNA Base Score: 5.9
CNA Vector (Microsoft): 🔒
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒
Local: No
Remote: Yes
Availability: 🔒
Status: Unproven
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒
Timeline
01/14/2025 VulDB entry created01/14/2025 Advisory disclosed
01/14/2025 Countermeasure disclosed
01/25/2025 VulDB entry last update
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: msrc.microsoft.com
Status: Confirmed
CVE: CVE-2025-21242 (🔒)
GCVE (CVE): GCVE-0-2025-21242
GCVE (VulDB): GCVE-100-291696
scip Labs: https://www.scip.ch/en/?labs.20161215
Entry
Created: 01/14/2025 07:30 PMUpdated: 01/25/2025 05:38 AM
Changes: 01/14/2025 07:30 PM (35), 01/14/2025 07:34 PM (34), 01/25/2025 05:38 AM (12)
Complete: 🔍
Cache ID: 18:D88:40
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