Common Weakness Enumeration
CWE-506
Allowed-with-ReviewEmbedded Malicious Code
Abstraction: Class · Status: Incomplete
The product contains code that appears to be malicious in nature.
555 vulnerabilities reference this CWE, most recent first.
CVE-2026-111862 (GCVE-0-2026-111862)
Vulnerability from cvelistv5 – Published: 2026-10-19 16:35 – Updated: 2026-10-20 14:10
VLAI
EPSS
VEX
Title
Rank Math SEO PRO 3.0.123 - Unauthenticated Embedded Malicious Code
Summary
Rank Math SEO PRO for WordPress is affected by a supply-chain compromise in a subset of version 3.0.123 packages downloaded or updated between October 15, 2026 at 20:02 UTC and October 16, 2026 at 07:12 UTC. Rank Math states that the affected plugin files contained malware that could compromise a website if the plugin was activated and directs sites that activated an affected package to treat the website as compromised. The malware may establish persistent access, communicate with rank1cdn[.]com, recreate hidden backdoors on page visits, and expose WordPress credentials, database credentials, API keys, and other secrets accessible to the web server. Rank Math identifies three malicious wp_options keys, hidden PHP backdoors, unauthorized administrator accounts, a fake WordPress core file, PHP-executable .cache files, and a system cron marker as incident indicators. Only packages obtained during the vendor-confirmed window are claimed as affected; version 3.0.123 alone is not sufficient to establish compromise. Rank Math removed the affected files and released version 3.0.124 as the clean replacement.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 14:10 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RankMath | Rank Math SEO PRO |
Affected:
3.0.123
|
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CVE-2026-97230 (GCVE-0-2026-97230)
Vulnerability from cvelistv5 – Published: 2026-09-24 22:36 – Updated: 2026-09-25 16:11
VLAI
EPSS
VEX
Title
IO::Socket::SSL::SelfCertificate versions 1.00 for Perl contains malware which executes Python code from an obfuscated URL
Summary
IO::Socket::SSL::SelfCertificate versions 1.00 for Perl contains malware which executes Python code from an obfuscated URL.
The generate_certificate runs a Python script saved as a certificate file. The pyhton script attempts to retrieve code from a hardcoded http URL that is obfuscated with base64 encoding and run the response body directly.
The impact is that arbitrary code can be invoked as the user, without a dropped script being saved on the affected host.
The releases have no test scripts nor build hooks. The intention may have been to trigger the payload after installation.
The dropper script is in lib/Crypt/SelfCertificate/sample/cert.pem.
This is similar to CVE-2026-95831 for the module Crypt::SelfCertificate.
The SHA-256 digests of the files are
ba24ee8ec3b7f47f65bed62e16fb413ace50653cf44bd8ea90914390922831e0 IO-Socket-SSL-SelfCertificate-1.00.tar.gz
821d38830e5eb8607738421c25ac25f59fff02a6ab67daa32fbd020429454dac IO-Socket-SSL-SelfCertificate-1.00/lib/IO/Socket/SSL/SelfCertificate/sample/cert.pem
d483cb7b23b7271cb11cf242bff4a2e1c02df0b9525eb0429abeea8961c399d5 IO-Socket-SSL-SelfCertificate-1.00-upload.tar.gz
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 16:11 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.nntp.perl.org/group/perl.cpan.testers… | vendor-advisory |
| https://www.cve.org/CVERecord?id=CVE-2026-95831 | related |
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CVE-2026-95831 (GCVE-0-2026-95831)
Vulnerability from cvelistv5 – Published: 2026-09-22 18:21 – Updated: 2026-09-23 16:09
VLAI
EPSS
VEX
Title
Crypt::SelfCertificate versions from 1.01 through 1.05 for Perl contains malware which executes Python code from an obfuscated URL
Summary
Crypt::SelfCertificate versions from 1.01 through 1.05 for Perl contains malware which executes Python code from an obfuscated URL.
The generate_certificate runs a Python script saved as a certificate file. The pyhton script attempts to retrieve code from a hardcoded http URL that is obfuscated with base64 encoding and run the response body directly.
The impact is that arbitrary code can be invoked as the user, without a dropped script being saved on the affected host.
The releases have no test scripts nor build hooks. The intention may have been to trigger the payload after installation.
For version 1.01, the dropper script is in lib/Crypt/SelfCertificate/sample/validate.p12.
For version 1.05, the dropper script is in lib/Crypt/SelfCertificate/sample/cert7.pem.
The SHA-256 digests of the files are
fbff21f45ff748365062a5e36fb2d72558cad82a507a6f357f320b4fcdf07760 Crypt-SelfCertificate-1.01.tar.gz
27b2d2d3174ad771474fff2521f5084ec231e9218ea8c832515aef1cbd5897bc lib/Crypt/SelfCertificate/sample/validate.p12
9fdfa7d69b034b77d4510cda567e8da1e486ca81c7daaadc5732a45c41d71991 Crypt-SelfCertificate-1.05.tar.gz
27b2d2d3174ad771474fff2521f5084ec231e9218ea8c832515aef1cbd5897bc lib/Crypt/SelfCertificate/sample/cert7.pem
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 20:13 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
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CVE-2026-77651 (GCVE-0-2026-77651)
Vulnerability from cvelistv5 – Published: 2026-08-21 00:41 – Updated: 2026-08-21 13:17
VLAI
EPSS
VEX
Summary
The arrayref crate 0.3.10 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 13:17 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
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CVE-2026-77650 (GCVE-0-2026-77650)
Vulnerability from cvelistv5 – Published: 2026-08-21 00:40 – Updated: 2026-08-21 13:20
VLAI
EPSS
VEX
Summary
The append-only-vec crate 0.1.9 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 13:18 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| droundy | append-only-vec |
Affected:
0.1.9
(semver)
|
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CVE-2026-77649 (GCVE-0-2026-77649)
Vulnerability from cvelistv5 – Published: 2026-08-21 00:39 – Updated: 2026-08-21 13:25
VLAI
EPSS
VEX
Summary
The internment crate 0.8.7 for Rust can trigger execution of malicious code when compiling a project that uses the crate, because it has a rogue dependency that registers with a command-and-control server to offer arbitrary code execution.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 13:25 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| droundy | internment |
Affected:
0.8.7
(semver)
|
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CVE-2026-74232 (GCVE-0-2026-74232)
Vulnerability from cvelistv5 – Published: 2026-08-27 10:39 – Updated: 2026-08-27 14:49
VLAI
EPSS
VEX
Title
Zbtlink MQWrt yunmgrd Cloud C2 Implant
Summary
Zbtlink L3_V2_8 firmware 3.0.0.4.528, Zbtlink WE826-T2 firmware 19.1101, Zbtlink ZBT-7628 firmware 1.0.0.2.007, Zbtlink ZBT-ZBT7621 firmware 1.0.0.3.001, MoreQuick MQAC-7620, MQAC-7620A, MQAP-7620, MQAP-7620A, and MQAP-7628 firmware 1.0.0.2.000, AP522 firmware 1.0.0.2.014, AP7628 and HC5661A firmware 3.0.0.4.380, APG721B firmware 19.0809, HK300 firmware 1.0.0.2.032, and MAP-N10 firmware 1.0.0.2.044 ship a backdoor command-and-control implant (yunmgrd) reachable over an unauthenticated cleartext UDP channel to a hardcoded C2 server. A remote unauthenticated attacker on the network path can hijack the channel and execute arbitrary commands as root. The attacker can also modify DNS entries, exfiltrate PPPoE credentials, and open reverse SSH tunnels.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 14:48 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| http://vulncheck.com/blog/zbt-darklantern-speakingstone | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/zbtlink-mqwr… | third-party-advisory |
Impacted products
15 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zbtlink | L3_V2_8 |
Affected:
3.0.0.4.528
(custom)
|
|
| Zbtlink | WE826-T2 |
Affected:
19.1101
(custom)
|
|
| Zbtlink | ZBT-7628 |
Affected:
1.0.0.2.007
(custom)
|
|
| Zbtlink | ZBT-ZBT7621 |
Affected:
1.0.0.3.001
(custom)
|
|
| MoreQuick | MQAC-7620 |
Affected:
1.0.0.2.000
(custom)
|
|
| MoreQuick | MQAC-7620A |
Affected:
1.0.0.2.000
(custom)
|
|
| MoreQuick | MQAP-7620 |
Affected:
1.0.0.2.000
(custom)
|
|
| MoreQuick | MQAP-7620A |
Affected:
1.0.0.2.000
(custom)
|
|
| MoreQuick | MQAP-7628 |
Affected:
1.0.0.2.000
(custom)
|
|
| Unknown | AP522 |
Affected:
1.0.0.2.014
(custom)
|
|
| Unknown | AP7628 |
Affected:
3.0.0.4.380
(custom)
|
|
| Unknown | APG721B |
Affected:
19.0809
(custom)
|
|
| Unknown | HC5661A |
Affected:
3.0.0.4.380
(custom)
|
|
| Unknown | HK300 |
Affected:
1.0.0.2.032
(custom)
|
|
| Unknown | MAP-N10 |
Affected:
1.0.0.2.044
(custom)
|
Date Public
2026-08-27 00:00
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CVE-2026-73533 (GCVE-0-2026-73533)
Vulnerability from cvelistv5 – Published: 2026-08-13 16:00 – Updated: 2026-08-17 15:08 X_Known Exploited Vulnerability
VLAI
EPSS
VEX
Title
Ninja Tables Pro 5.2.11 Embedded Malicious Code via Tampered Plugin Build
Summary
Ninja Tables Pro 5.2.11 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP file (app/Library/updater/NinjaTableDataSync.php) that established a backdoor REST API endpoint, dropped persistent PHP files in mu-plugins and uploads directories, installed a passwordless administrator account, and registered scheduled tasks that survived plugin removal.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 15:07 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://wpmanageninja.com/security-incident-on-31… | technical-description |
| https://wordpress.org/plugins/ninja-tables/ | product |
| https://www.vulncheck.com/advisories/ninja-tables… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WPManageNinja | Ninja Tables Pro |
Affected:
5.2.11
(semver)
cpe:2.3:a:wpmanageninja:ninja_tables:5.2.11:*:*:*:*:wordpress:*:* |
Date Public
2026-08-01 00:00
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CVE-2026-73532 (GCVE-0-2026-73532)
Vulnerability from cvelistv5 – Published: 2026-08-13 16:01 – Updated: 2026-08-14 16:48 X_Known Exploited Vulnerability
VLAI
EPSS
VEX
Title
Fluent Forms Pro 6.2.7 Embedded Malicious Code via Tampered Plugin Build
Summary
Fluent Forms Pro 6.2.7 contains an embedded malicious code vulnerability introduced via a tampered plugin build served through a decommissioned update server. The tampered build introduced a rogue PHP file (libs/class-license-sync.php), loaded via a require_once directive added to fluentformpro.php, that established a backdoor REST API endpoint, dropped persistent PHP files in mu-plugins and uploads directories, installed a passwordless administrator account, and registered scheduled tasks that survived plugin removal.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 16:47 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://wpmanageninja.com/security-incident-on-31… | technical-description |
| https://wordpress.org/plugins/fluentform/ | product |
| https://patchstack.com/database/wordpress/plugin/… | third-party-advisory |
| https://www.vulncheck.com/advisories/fluent-forms… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| WPManageNinja | Fluent Forms Pro |
Affected:
6.2.7
(semver)
|
Date Public
2026-08-01 00:00
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CVE-2026-67595 (GCVE-0-2026-67595)
Vulnerability from cvelistv5 – Published: 2026-07-29 21:33 – Updated: 2026-09-24 14:18 X_Open Source X_Known Exploited Vulnerability
VLAI
EPSS
VEX
Title
VaahCMS 2.0.0 - 2.3.4 Malicious JavaScript Supply Chain via security-otp.blade.php
Summary
VaahCMS versions 2.0.0 through 2.3.4 contain a malicious obfuscated JavaScript payload embedded in the Blade template responsible for rendering security OTP emails, allowing remote attackers to execute unauthorized code in any browser that renders the affected email template with JavaScript enabled. The payload establishes a WebSocket connection to a hardcoded command-and-control endpoint, installs a password-field keylogger using MutationObserver to capture dynamically added inputs, scrapes WhatsApp Web DOM content, and accepts remote commands to redirect or overwrite the rendered page.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:21 UTC
CWE
- CWE-506 - Embedded Malicious Code
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/webreinvent/vaahcms/pull/317 | issue-tracking |
| https://github.com/webreinvent/vaahcms/commit/8d7… | patch |
| https://www.vulncheck.com/advisories/vaahcms-mali… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| webreinvent | vaahcms |
Affected:
2.0.0 , ≤ 2.3.4
(semver)
Unaffected: 8d7898f7a385a5fade1180a9b664ff158d873129 (git) cpe:2.3:a:webreinvent:vaahcms:*:*:*:*:*:*:*:* |
Date Public
2026-03-30 00:00
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Mitigation
Implementation
Operation
Remove the malicious code and start an effort to ensure that no more malicious code exists. This may require a detailed review of all code, as it is possible to hide a serious attack in only one or two lines of code. These lines may be located almost anywhere in an application and may have been intentionally obfuscated by the attacker.
CAPEC-442: Infected Software
An adversary adds malicious logic, often in the form of a computer virus, to otherwise benign software. This logic is often hidden from the user of the software and works behind the scenes to achieve negative impacts. Many times, the malicious logic is inserted into empty space between legitimate code, and is then called when the software is executed. This pattern of attack focuses on software already fielded and used in operation as opposed to software that is still under development and part of the supply chain.
CAPEC-448: Embed Virus into DLL
An adversary tampers with a DLL and embeds a computer virus into gaps between legitimate machine instructions. These gaps may be the result of compiler optimizations that pad memory blocks for performance gains. The embedded virus then attempts to infect any machine which interfaces with the product, and possibly steal private data or eavesdrop.
CAPEC-636: Hiding Malicious Data or Code within Files
Files on various operating systems can have a complex format which allows for the storage of other data, in addition to its contents. Often this is metadata about the file, such as a cached thumbnail for an image file. Unless utilities are invoked in a particular way, this data is not visible during the normal use of the file. It is possible for an attacker to store malicious data or code using these facilities, which would be difficult to discover.