Azure Access BLU-IC2/BLU-IC4 up to 1.19.5 /etc/timezone out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Azure Access BLU-IC2 and BLU-IC4 up to 1.19.5. This impacts an unknown function of the file /etc/timezone. The manipulation results in out-of-bounds write. This vulnerability is known as CVE-2025-12603. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Azure Access BLU-IC2 and BLU-IC4 up to 1.19.5. It has been classified as critical. Affected is an unknown part of the file /etc/timezone. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

/etc/timezone can be Arbitrarily Written.This issue affects BLU-IC2: through 1.19.5; BLU-IC4: through 1.19.5.

The weakness was published by Kevin Schaller, Benjamin Lafois, Alexi Bitsios, Sebastian Toscano and Dominik Schneider. The advisory is shared for download at azure-access.com. This vulnerability is traded as CVE-2025-12603 since 11/01/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/08/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-37438). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.0
VulDB Temp Score: 5.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

11/01/2025 CVE reserved
11/02/2025 +1 days Advisory disclosed
11/02/2025 +0 days VulDB entry created
11/08/2025 +6 days VulDB entry last update

Sourcesinfo

Advisory: azure-access.com
Researcher: Kevin Schaller, Benjamin Lafois, Alexi Bitsios, Sebastian Toscano, Dominik Schneider
Status: Confirmed

CVE: CVE-2025-12603 (🔒)
GCVE (CVE): GCVE-0-2025-12603
GCVE (VulDB): GCVE-100-330900
EUVD: 🔒

Entryinfo

Created: 11/02/2025 07:25
Updated: 11/08/2025 10:10
Changes: 11/02/2025 07:25 (66), 11/02/2025 12:01 (1), 11/08/2025 10:10 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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