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Comparison Overview

TelmexTelmex
VS
Vivo (Telefônica Brasil)Vivo (Telefônica Brasil)
Telmex

Telmex

Parque Vía 190, Ciudad de México, 06500, MX

Last Update: 02/04/2026

View Profile
Between 750 and 799
http://www.telmex.com
774/1000Fair

TELMEX, la empresa líder de telecomunicaciones y servicios TI en México, ha realizado importantes inversiones para desarrollar la plataforma tecnológica más robusta y vanguardista del país, que le permite ofrecer la más amplia gama de soluciones, con los mayores estánda...

NAICS:517
NAICS Definition:Telecommunications
Employees:14,046
Subsidiaries:0
12-month incidents
0
Known data breaches
0
Attack type number
0
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

Avenida Eng. Luís Carlos Berrini, 1376, São Paulo, 04571 - 000, BR

Last Update: 01/04/2026

View Profile
Between 800 and 849
http://www.vivo.com.br
800/1000Good

Vivo (Telefônica Brasil) is part of the Telefónica Group and with more than 94 million customers, of which 75 million mobile and 19 million fixed, we are the largest telecommunications company in Brazil, with nationwide presence and a complete, convergent portfolio of p...

NAICS:517
NAICS Definition:Telecommunications
Employees:38,994
Subsidiaries:20
12-month incidents
0
Known data breaches
0
Attack type number
0

Compliance Ranges Comparison

Based On Specific Ai Models Category
Telmex

Telmex

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA

Benchmark & Cyber Underwriting Signals

Incidents vs Telecommunications Industry Avg (This Year)

No incidents recorded for Telmex in 2026.

Incidents

Incidents vs Telecommunications Industry Avg (This Year)

No incidents recorded for Vivo (Telefônica Brasil) in 2026.

Incidents

Incident History - Telmex (X = Date, Y = Severity)

Telmex cyber incidents detection timeline including parent company and subsidiaries.

No timeline data available
R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Incident History - Vivo (Telefônica Brasil) (X = Date, Y = Severity)

Vivo (Telefônica Brasil) cyber incidents detection timeline including parent company and subsidiaries.

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Notable Incidents

Last Cyber / HR Incidents / Global...
Telmex

Telmex

Incidents
No explicit notable incidents reported.
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

Incidents
No explicit notable incidents reported.

FAQ

Between Telmex company and Vivo (Telefônica Brasil) company, which one has the best AI Cybersecurity Score ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced more cyber incidents in the past ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced more cyber incidents this year ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced at least one ransomware attack ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced at least one data breach ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced at least one targeted cyberattack ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has experienced at least one vulnerability ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one holds the most compliance certifications ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one holds the fewest compliance certifications ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has the most subsidiaries ?
Between Telmex company and Vivo (Telefônica Brasil) company, which one has the largest number of employees ?
Between Telmex and Vivo (Telefônica Brasil), which company holds both SOC 2 Type 1 certifications ?
Between Telmex and Vivo (Telefônica Brasil), which company holds both SOC 2 Type 2 certifications ?
Which company is ISO 27001 certified - Telmex or Vivo (Telefônica Brasil) ?
Which company is PCI DSS compliant - Telmex or Vivo (Telefônica Brasil) ?
Between Telmex and Vivo (Telefônica Brasil), which company complies with HIPAA regulations for healthcare data ?
Between Telmex and Vivo (Telefônica Brasil), which company complies with GDPR requirements ?

Latest Global CVEs

CVE-2026-59858
SUMMARY

Vim is an open source, command line text editor. Prior to 9.2.0735, the C omni-completion script in runtime/autoload/ccomplete.vim interpolates the typeref: or typename: extension field of a tags entry, without escaping, into a :vimgrep pattern that is run through :execute. Because :vimgrep honors the bar as a command separator, a crafted tag field can close the search pattern and append an arbitrary Ex command; opening a hostile .c file whose project tags file contains such an entry and invoking C omni-completion runs that command as the editing user. This issue is fixed in version 9.2.0735.

PUBLISHED
Date2026-07-09
UPDATED
Date2026-07-09
RISK INFORMATION (Score: )
CVSS4
Base Score: 8.4
Complexity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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
NA
EXPLOITABILITY
NA
CVE-2026-59857
SUMMARY

Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of spell_soundfold_sal() in src/spell.c translates a word through a spell file's SAL sound-folding rules into a caller-owned result buffer, but its result writes are guarded with reslen < MAXWLEN, allowing reslen to reach MAXWLEN before res[reslen] = NUL writes one byte past the end of the MAXWLEN-element stack buffer. A boundary-length word passed to soundfold(), or reached via sound-based spell suggestion while a SAL-based spell language is active under a non-multibyte 8-bit encoding, can corrupt the eval_soundfold() stack frame and crash the editor. This issue is fixed in version 9.2.0725.

PUBLISHED
Date2026-07-09
UPDATED
Date2026-07-09
RISK INFORMATION (Score: )
CVSS4
Base Score: 5.6
Complexity: LOW
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/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
NA
EXPLOITABILITY
NA
CVE-2026-59856
SUMMARY

Vim is an open source, command line text editor. Prior to 9.2.0736, the PHP omni-completion script in runtime/autoload/phpcomplete.vim interpolates a class or trait name, taken from the contents of the edited buffer, into a search() pattern that is run via win_execute() without escaping. A name containing a single quote can terminate the search() string argument early, and because the bar is honored as an Ex command separator, the remainder of the name is run as Ex commands; via the :! command this allows arbitrary operating-system command execution when a victim opens a crafted PHP file and invokes omni-completion. This issue is fixed in version 9.2.0736.

PUBLISHED
Date2026-07-09
UPDATED
Date2026-07-09
RISK INFORMATION (Score: )
CVSS4
Base Score: 8.4
Complexity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/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
NA
EXPLOITABILITY
NA
CVE-2026-59855
SUMMARY

SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, Asset.render in app/src/asset/index.ts interpolates the unsanitized this.path value into HTML assigned to innerHTML, allowing a crafted asset link containing a double quote to break out of the src attribute, inject an event handler, and execute JavaScript that can run OS commands in the Electron renderer. This issue is fixed in versions 3.7.1-alpha.2 and 3.7.1.

PUBLISHED
Date2026-07-09
UPDATED
Date2026-07-09
RISK INFORMATION (Score: )
CVSS4
Base Score: 8.6
Complexity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/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
NA
EXPLOITABILITY
NA
CVE-2026-59854
SUMMARY

SiYuan is an open-source personal knowledge management system. Prior to 3.7.1, POST /api/file/globalCopyFiles accepts attacker-supplied absolute source paths and relies on util.IsSensitivePath in kernel/util/path.go, whose denylist misses common home-directory credential files such as .git-credentials, .netrc, .pgpass, .kube/config, .docker/config.json, and .gnupg, allowing an authenticated administrator or API-token user to copy those files into the workspace and exfiltrate them through the file API. This issue is fixed in versions 3.7.1-alpha.2 and 3.7.1.

PUBLISHED
Date2026-07-09
UPDATED
Date2026-07-09
RISK INFORMATION (Score: 4.9)
CVSS3
Base Score: 4.9
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
IMPACT SCORE
3.6
EXPLOITABILITY
1.2