What is the official website of Mercer UK ?

The official website of Mercer UK is https://www.mercer.com/en-gb/.

What is Mercer UK's cybersecurity risk score?

Mercer UK has an AI-generated cybersecurity risk score of 757 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has Mercer UK experienced?

According to Rankiteo, Mercer UK currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has Mercer UK been affected by any supply chain cyber incidents ?

According to Rankiteo, Mercer UK has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.

Does Mercer UK have SOC 2 Type 1 certification ?

According to Rankiteo, Mercer UK is not certified under SOC 2 Type 1.

Does Mercer UK have SOC 2 Type 2 certification ?

According to Rankiteo, Mercer UK does not hold a SOC 2 Type 2 certification.

Does Mercer UK comply with GDPR ?

According to Rankiteo, Mercer UK is not listed as GDPR compliant.

Does Mercer UK have PCI DSS certification ?

According to Rankiteo, Mercer UK does not currently maintain PCI DSS compliance.

Does Mercer UK comply with HIPAA ?

According to Rankiteo, Mercer UK is not compliant with HIPAA regulations.

Does Mercer UK have ISO 27001 certification ?

According to Rankiteo,Mercer UK is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does Mercer UK operate in ?

Mercer UK operates primarily in the Professional Services industry.

How many employees does Mercer UK have ?

Mercer UK employs approximately 335 people worldwide.

Does Mercer UK own any subsidiaries ?

Mercer UK presently has no subsidiaries across any sectors.

How many LinkedIn followers does Mercer UK have ?

Mercer UK's official LinkedIn profile has approximately 13,944 followers.

What is the NAICS classification code for Mercer UK ?

Mercer UK is classified under the NAICS code 54, which corresponds to Professional, Scientific, and Technical Services.

Does Mercer UK have a Crunchbase profile ?

No, Mercer UK does not have a profile on Crunchbase.

Does Mercer UK have a LinkedIn profile ?

Yes, Mercer UK maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/mercer-uk.

How many cybersecurity incidents has Mercer UK experienced ?

As of June 21, 2026, Rankiteo reports that Mercer UK has experienced 3 cybersecurity incidents.

How many peer or competitor companies does Mercer UK have ?

Mercer UK has an estimated 754 peer or competitor companies worldwide.

What types of cybersecurity incidents has Mercer UK faced ?

Incident Types: The types of cybersecurity incidents that have occurred include Breach and Data Leak.

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Mercer UK

Boost Score +25 with badge (5 left)

757

/1000

Fair

782

/1000

Fair

Mercer UK Vendor Cyber Rating & Cyber Score

mercer.com

Add Your Compliance Badge

Mercer believes in building brighter futures by redefining the world of work, reshaping retirement and investment outcomes, and unlocking real health and well-being. Mercer’s more than 25,000 employees are based in 44 countries and the firm operates in over 130 countries. Mercer is a business of Marsh & McLennan (NYSE: MMC), the world’s leading professional services firm in the areas of risk, strategy and people, with 76,000 colleagues and annual revenue of $17 billion. Through its market-leading businesses including Marsh, Guy Carpenter and Oliver Wyman, Marsh & McLennan helps clients navigate an increasingly dynamic and complex environment. For more information, visit www.mercer.com. Follow Mercer on Twitter at @UKMercer.

Mercer UK A.I CyberSecurity Scoring

Scoring History

Mercer UK

Mercer UK CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

Mercer UK

Data Leak

04/2021

MAR18242223

Mercer

Breach

1/2020

FIDLPLAMEMER177...

Mercer UK

Breach

6/2013

MAR307072525

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A.I.

Mercer UK Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for Mercer UK

Incidents vs Professional Services Industry Avg (This Year)

No incidents recorded for Mercer UK in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for Mercer UK in 2026.

Incident Types Mercer UK vs Professional Services Industry Avg (This Year)

No incidents recorded for Mercer UK in 2026.

Incident History - Mercer UK (X = Date, Y = Severity)

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SUBSIDIARY

Mercer UK Subsidiaries

Mercer UK

Professional Services

Website: https://www.mercer.com/en-gb/

Company Size: 10,001+ employees

MercerProfessional Services

Marsh McLennanFinancial Services

Mercer - InvestmentsFinancial Services

Mercer USProfessional Services

Mercer ItaliaBusiness Consulting and Services

Mercer–HealthHuman Resources

Mercer Deutschland GmbHFinancial Services

Mercer IrelandHuman Resources

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NEWS

Mercer UK CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

February 20, 2026 08:10 AM

AI firm expands into North with Leeds base & new execs

London-founded CloudWize welcomes former CEO of Vapour Cloud as CCO and ex-comms agency owner Katie Mallinson as CMO.

Read Article

February 18, 2026 08:00 AM

ShinyHunters claims it drove off with 1.7M CarGurus records

updated CarGurus purportedly suffered a data breach with 1.7 million corporate records stolen, according to a notorious cybercrime crew that...

Read Article

February 17, 2026 08:00 AM

Hackers threaten America's largest female-led investment advisor with stolen client records

ShinyHunters claims that it has breached Mercer Advisors and Beacon Pointe, stealing millions of records and threatening to leak them on the...

Read Article

July 05, 2025 05:05 PM

Employee Benefits UK: Trends for 2025, Q2 Insights & Tips

The Reciprocal tariffs, Scattered Spider cyber-attacks, and UK Supreme Court ruling on gender have hit the headlines in Q2, 2025.

Read Article

June 10, 2025 07:00 AM

Mercer to buy Fundhouse’s UK business

Mercer, a business of Marsh McLennan, has agreed to acquire the UK operations of Fundhouse for an undisclosed sum.

Read Article

April 20, 2025 10:50 AM

2025 Cybersecurity Insights for Financial Services

Discover the 2025 People Risk in Cybersecurity Report, highlighting talent shortages and the need for a people-focused approach in financial services.

Read Article

February 15, 2025 08:00 AM

The foundation of modern software development is under rising cyber attack

Organizations are seeing a rise in cybersecurity attacks against application programming interfaces, or APIs, and aren't always prepared to...

Read Article

November 13, 2024 09:37 AM

Small and medium-sized enterprises (SMEs) have a cybersecurity knowledge gap

In today's digital world, cyber-threats are ever present. Protecting against them is a priority for SMEs, but many worry they lack the sufficient knowledge...

Read Article

October 21, 2024 07:00 AM

DOL cyber guidance applies to ERISA health and welfare plans

The DOL confirmed 2021 cybersecurity guidance applies to all ERISA plans and has published tips and best practices to help plan fiduciaries...

Read Article

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-56355

SUMMARY

GNU Savannah Administration Savane through 3.17 uses untrusted data as part of authorization.

Published

Date2026-06-20

Updated

Date2026-06-20

RISK INFORMATION (Score: 3.7)

cvss3

Base Score: 3.7

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Impact Score

1.4

Exploitability

2.2

REFERENCES

CVE-2026-56347

SUMMARY

AVideo TopMenu plugin through version 26.0 contains a stored cross-site scripting vulnerability in menu item rendering due to missing output encoding of icon classes, URLs, and text labels. Attackers can inject malicious JavaScript through unescaped menu item fields that execute for all site visitors, potentially stealing session cookies or performing unauthorized actions.

Published

Date2026-06-20

Updated

Date2026-06-20

RISK INFORMATION (Score: 6.1)

cvss3

Base Score: 6.1

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

cvss4

Base Score: 5.3

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

2.7

Exploitability

2.8

REFERENCES

CVE-2026-56346

SUMMARY

AVideo through version 25.0 contains an authentication bypass vulnerability in the decryptMessage.json.php endpoint that allows unauthenticated users to decrypt PGP messages. Remote attackers can submit private keys, ciphertext, and passphrases to perform server-side decryption without credentials, exposing key material to logs and enabling resource exhaustion attacks.

Published

Date2026-06-20

Updated

Date2026-06-20

RISK INFORMATION (Score: 6.5)

cvss3

Base Score: 6.5

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

cvss4

Base Score: 6.9

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

2.5

Exploitability

3.9

REFERENCES

CVE-2026-56345

SUMMARY

AVideo through 29.0 contains an authorization bypass vulnerability in the Meet plugin's uploadRecordedVideo.json.php endpoint that derives the target users_id from the uploaded filename without verification. An attacker with knowledge of the Meet shared secret can craft a malicious file upload with a filename containing an arbitrary users_id to invoke passwordless User->login() and establish an authenticated session as any user including admin. Attackers can obtain the Meet shared secret through path-traversal vulnerabilities or timing attacks against checkToken.json.php, then POST a crafted file to uploadRecordedVideo.json.php with a filename like '1-anything.mp4' to hijack admin sessions and gain full account takeover.

Published

Date2026-06-20

Updated

Date2026-06-20

RISK INFORMATION (Score: 8.1)

cvss3

Base Score: 8.1

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

cvss4

Base Score: 9.2

Complexity: HIGH

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

5.9

Exploitability

2.2

REFERENCES

CVE-2026-56342

SUMMARY

AVideo through version 27.0 contains a server-side request forgery vulnerability in plugin/Live/test.php that allows authenticated administrators to read arbitrary URLs via the statsURL parameter, which lacks isSSRFSafeURL() validation and accepts requests to private IP ranges and cloud metadata endpoints. Attackers can exploit this by crafting requests to internal services, cloud metadata endpoints like 169.254.169.254, and localhost to retrieve sensitive information including IAM credentials, internal service responses, and network configuration details.

Published

Date2026-06-20

Updated

Date2026-06-20

RISK INFORMATION (Score: 6.8)

cvss3

Base Score: 6.8

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

cvss4

Base Score: 6.1

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Impact Score

Exploitability

2.3

REFERENCES

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SBOM (Software Bill of Materials)Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.

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