VDB-383812 · CVE-2026-55977 · GCVE-0-2026-55977

EShare Pro excessive authentication

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.
3.7	$0-$5k	2.00-

Summaryinfo

A vulnerability, which was classified as problematic, was found in EShare Pro. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to excessive authentication. This vulnerability is tracked as CVE-2026-55977. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in EShare Pro (affected version not known). It has been declared as problematic. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a excessive authentication vulnerability. The CWE definition for the vulnerability is CWE-307. The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks. As an impact it is known to affect confidentiality. CVE summarizes:

Successful exploitation of this vulnerability could allow an attacker with local network access to bypass the application's rate-limiting mechanism, enabling brute-forcing of the screen-sharing code and potentially displaying harmful content on the affected screen.

The advisory is shared for download at csa.gov.sg. This vulnerability was named CVE-2026-55977 since 06/18/2026. The exploitation appears to be difficult. 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 MITRE ATT&CK project declares the attack technique as T1110.001.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

EShare

Name

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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: 🔍

Exploitinginfo

Class: Excessive authentication
CWE: CWE-307 / CWE-799 / CWE-400
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/18/2026 CVE reserved
07/28/2026 +40 days Advisory disclosed
07/28/2026 +0 days VulDB entry created
07/28/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: csa.gov.sg
Status: Not defined

CVE: CVE-2026-55977 (🔒)
GCVE (CVE): GCVE-0-2026-55977
GCVE (VulDB): GCVE-100-383812

Entryinfo

Created: 07/28/2026 10:25
Changes: 07/28/2026 10:25 (50)
Complete: 🔍
Cache ID: 216::103