Microsoft Edge information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1$5k-$25k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Microsoft Edge. The affected element is an unknown function. Executing a manipulation can lead to information disclosure. This vulnerability is handled as CVE-2026-57990. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Microsoft Edge (affected version unknown). This vulnerability affects an unknown functionality. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

Files or directories accessible to external parties in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.

The advisory is shared for download at msrc.microsoft.com. This vulnerability was named CVE-2026-57990 since 06/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 07/27/2026). The MITRE ATT&CK project declares the attack technique as T1592.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at CNNVD (CNNVD-2026-55243890) and EUVD (EUVD-2026-49059). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: Patch
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/26/2026 CVE reserved
07/26/2026 +30 days Advisory disclosed
07/26/2026 +0 days VulDB entry created
07/27/2026 +1 days VulDB entry last update

Sourcesinfo

Vendor: microsoft.com

Advisory: msrc.microsoft.com
Status: Confirmed

CVE: CVE-2026-57990 (🔒)
GCVE (CVE): GCVE-0-2026-57990
GCVE (VulDB): GCVE-100-383356
EUVD: 🔒
CNNVD: CNNVD-2026-55243890 - Microsoft Edge(Chromium-based) 权限许可和访问控制问题漏洞

Entryinfo

Created: 07/26/2026 20:03
Updated: 07/27/2026 21:26
Changes: 07/26/2026 20:03 (52), 07/26/2026 22:38 (1), 07/27/2026 21:26 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

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