Common Weakness Enumeration
CWE-494
AllowedDownload of Code Without Integrity Check
Abstraction: Base · Status: Draft
The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.
328 vulnerabilities reference this CWE, most recent first.
CVE-2026-22306 (GCVE-0-2026-22306)
Vulnerability from cvelistv5 – Published: 2026-08-19 19:25 – Updated: 2026-08-26 19:29
VLAI
EPSS
VEX
Title
Critical flaw impacting OZOLS ERP's automatic update channel
Summary
Download of code without integrity check, inclusion of functionality from untrusted control sphere, and cleartext
transmission of sensitive information vulnerability in Ozols Grupa OZOLS
on Windows caused by an abandoned auto-update domain. Affected
component: the automatic update channel - OzolsSQL client update path, the <db>_update SQL Server Agent job (@subsystem = N'ActiveScripting') and serv_update.vbs.
This issue affects OZOLS: before 1.1.1233.
Severity
10 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 19:29 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://offseq.com/en/research/ozols-cve-2026-22306 | third-party-advisory |
| https://offseq.com/en/research/ozols-cve-2026-223… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ozols Grupa | OZOLS |
Affected:
0 , < 1.1.1233
(semver)
|
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CVE-2026-21810 (GCVE-0-2026-21810)
Vulnerability from cvelistv5 – Published: 2026-08-26 21:55 – Updated: 2026-08-27 16:07
VLAI
EPSS
VEX
Title
HCL BigFix Quantum Risk Analyzer is affected by a hardcoded external resource reference and downloading code without integrity checking
Summary
HCL BigFix Quantum Risk Analyzer is affected by a hardcoded external resource reference and a lack of binary integrity which could allow an attacker to obtain sensitive information or modify the binary.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 16:07 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | BigFix Quantum Risk Analyzer |
Affected:
2.0.1.47
|
Date Public
2026-08-26 21:00
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CVE-2026-20056 (GCVE-0-2026-20056)
Vulnerability from cvelistv5 – Published: 2026-02-04 16:11 – Updated: 2026-02-04 16:40
VLAI
EPSS
VEX
Title
Cisco Secure Web Appliance TBD Bypass Vulnerability
Summary
A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malicious archive files to be downloaded.
This vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-04 16:40 UTC
CWE
- CWE-494 - Download of Code Without Integrity Check
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Secure Web Appliance |
Affected:
11.8.0-453
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
"status": "affected",
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{
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{
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{
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CVE-2026-13433 (GCVE-0-2026-13433)
Vulnerability from cvelistv5 – Published: 2026-08-12 20:44 – Updated: 2026-08-13 14:08
VLAI
EPSS
VEX
Title
IBM i Access Client Solutions (ACS) is Affected By Multiple Vulnerabilities
Summary
IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation.
Severity
8.3 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:08 UTC
CWE
- CWE-494 - Download of Code Without Integrity Check
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7282954 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | i Access Client Solutions |
Affected:
1.1.2.0 , ≤ 1.1.9.13
(semver)
cpe:2.3:a:ibm:i_access_client_solutions:1.1.2.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i_access_client_solutions:1.1.9.13:*:*:*:*:*:*:* |
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CVE-2026-12259 (GCVE-0-2026-12259)
Vulnerability from cvelistv5 – Published: 2026-08-03 07:09 – Updated: 2026-08-03 14:59
VLAI
EPSS
VEX
Title
Improper Input Validation in nltk/nltk
Summary
In nltk version 3.9.4, the `nltk.downloader.Downloader._download_package()` function writes downloaded package bytes to disk and may extract them before enforcing SHA-256 or MD5 checksum validation. This allows an attacker to tamper with the package response body for `info.url` through a compromised mirror, malicious proxy, or other source-substitution condition, leading to the installation of attacker-controlled package bytes. The vulnerability can result in malicious corpus or model content being trusted by downstream users or applications.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 14:55 UTC
CWE
- CWE-494 - Download of Code Without Integrity Check
Assigner
References
1 reference
Impacted products
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CVE-2026-9089 (GCVE-0-2026-9089)
Vulnerability from cvelistv5 – Published: 2026-05-21 14:32 – Updated: 2026-05-22 03:55
VLAI
EPSS
VEX
Summary
The ConnectWise Automate™ Agent does not fully verify the authenticity of components obtained during plugin loading and self-update operations. This issue is addressed in Automate 2026.5.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 00:00 UTC
CWE
- CWE-494 - Download of code without integrity check
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ConnectWise | Automate |
Affected:
All versions prior to 2026.5
|
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CVE-2026-9037 (GCVE-0-2026-9037)
Vulnerability from cvelistv5 – Published: 2026-05-28 19:04 – Updated: 2026-05-29 15:00
VLAI
EPSS
VEX
Title
Download of code without integrity check in XCharge C6
Summary
A firmware update mechanism in the affected charging controller fails to validate the authenticity of firmware packages delivered through the device's management interface. Because cryptographic signatures are not verified, an attacker with the ability to interfere with or impersonate the management channel could cause the device to install an unauthorized firmware package. This condition could allow execution of unauthorized code with high privileges on the device.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 14:59 UTC
CWE
- CWE-494 - Download of code without integrity check
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
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CVE-2026-3502 (GCVE-0-2026-3502)
Vulnerability from cvelistv5 – Published: 2026-03-30 18:05 – Updated: 2026-04-03 03:55
VLAI
EPSS
VEX
Title
TrueConf Client Update Integrity Verification Bypass
Summary
TrueConf Client downloads application update code and applies it without performing verification. An attacker who is able to influence the update delivery path can substitute a tampered update payload. If the payload is executed or installed by the updater, this may result in arbitrary code execution in the context of the updating process or user.
Severity
7.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-31 00:00 UTC
CWE
- CWE-494 - Download of Code Without Integrity Check.
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://trueconf.com/blog/update/trueconf-8-5 | |
| https://research.checkpoint.com/2026/operation-tr… | third-party-advisory |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TrueConf | TrueConf Client |
Affected:
TrueConf Client versions 8.1.0 through 8.5.2
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CVE-2026-3428 (GCVE-0-2026-3428)
Vulnerability from cvelistv5 – Published: 2026-04-16 02:02 – Updated: 2026-04-16 12:31
VLAI
EPSS
VEX
Summary
A Download of Code Without Integrity Check vulnerability in the update modules in ASUS Member Center(华硕大厅) allows a local user to achieve privilege escalation to Administrator via exploitation of a Time-of-check Time-of-use (TOC-TOU) during the update process, where an unexpected payload is substituted for a legitimate one immediately after download, and subsequently executed with administrative privileges upon user consent.
Refer to the 'Security Update for ASUS Member Center' section on the ASUS Security Advisory for more information.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-16 12:22 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.asus.com/security-advisory/ | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ASUS | Member Center(华硕大厅) |
Affected:
1.6.6.4 and earlier
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CVE-2026-3000 (GCVE-0-2026-3000)
Vulnerability from cvelistv5 – Published: 2026-03-02 06:03 – Updated: 2026-03-02 14:08
VLAI
EPSS
VEX
Title
Changing｜IDExpert Windows Logon Agent - Remote Code Execution
Summary
IDExpert Windows Logon Agent developed by Changing has a Remote Code Execution vulnerability, allowing unauthenticated remote attackers to force the system to download arbitrary DLL files from a remote source and execute them.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-02 14:07 UTC
CWE
- CWE-494 - Download of Code Without Integrity Check
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-10740-b2eb2-1.html | third-party-advisory |
| https://www.twcert.org.tw/en/cp-139-10741-daed4-2.html | third-party-advisory |
| https://www.changingtec.com/news_detail.jsp?item_id=348 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Changing | IDExpert Windows Logon Agent |
Affected:
2.7.3.230719 , ≤ 2.8.4.250925
(custom)
|
Date Public
2026-03-02 06:01
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Mitigation MIT-42
Implementation
Perform proper forward and reverse DNS lookups to detect DNS spoofing.
Mitigation
Architecture and Design
Operation
- Encrypt the code with a reliable encryption scheme before transmitting.
- This will only be a partial solution, since it will not detect DNS spoofing and it will not prevent your code from being modified on the hosting site.
Mitigation MIT-4
Architecture and Design
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- Speficially, it may be helpful to use tools or frameworks to perform integrity checking on the transmitted code.
- When providing the code that is to be downloaded, such as for automatic updates of the software, then use cryptographic signatures for the code and modify the download clients to verify the signatures. Ensure that the implementation does not contain CWE-295, CWE-320, CWE-347, and related weaknesses.
- Use code signing technologies such as Authenticode. See references [REF-454] [REF-455] [REF-456].
Mitigation MIT-17
Architecture and Design
Operation
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Architecture and Design
Operation
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-184: Software Integrity Attack
An attacker initiates a series of events designed to cause a user, program, server, or device to perform actions which undermine the integrity of software code, device data structures, or device firmware, achieving the modification of the target's integrity to achieve an insecure state.
CAPEC-185: Malicious Software Download
An attacker uses deceptive methods to cause a user or an automated process to download and install dangerous code that originates from an attacker controlled source. There are several variations to this strategy of attack.
CAPEC-186: Malicious Software Update
An adversary uses deceptive methods to cause a user or an automated process to download and install dangerous code believed to be a valid update that originates from an adversary controlled source.
CAPEC-187: Malicious Automated Software Update via Redirection
An attacker exploits two layers of weaknesses in server or client software for automated update mechanisms to undermine the integrity of the target code-base. The first weakness involves a failure to properly authenticate a server as a source of update or patch content. This type of weakness typically results from authentication mechanisms which can be defeated, allowing a hostile server to satisfy the criteria that establish a trust relationship. The second weakness is a systemic failure to validate the identity and integrity of code downloaded from a remote location, hence the inability to distinguish malicious code from a legitimate update.
CAPEC-533: Malicious Manual Software Update
An attacker introduces malicious code to the victim's system by altering the payload of a software update, allowing for additional compromise or site disruption at the victim location. These manual, or user-assisted attacks, vary from requiring the user to download and run an executable, to as streamlined as tricking the user to click a URL. Attacks which aim at penetrating a specific network infrastructure often rely upon secondary attack methods to achieve the desired impact. Spamming, for example, is a common method employed as an secondary attack vector. Thus the attacker has in their arsenal a choice of initial attack vectors ranging from traditional SMTP/POP/IMAP spamming and its varieties, to web-application mechanisms which commonly implement both chat and rich HTML messaging within the user interface.
CAPEC-538: Open-Source Library Manipulation
Adversaries implant malicious code in open source software (OSS) libraries to have it widely distributed, as OSS is commonly downloaded by developers and other users to incorporate into software development projects. The adversary can have a particular system in mind to target, or the implantation can be the first stage of follow-on attacks on many systems.
CAPEC-657: Malicious Automated Software Update via Spoofing
An attackers uses identify or content spoofing to trick a client into performing an automated software update from a malicious source. A malicious automated software update that leverages spoofing can include content or identity spoofing as well as protocol spoofing. Content or identity spoofing attacks can trigger updates in software by embedding scripted mechanisms within a malicious web page, which masquerades as a legitimate update source. Scripting mechanisms communicate with software components and trigger updates from locations specified by the attackers' server. The result is the client believing there is a legitimate software update available but instead downloading a malicious update from the attacker.
CAPEC-662: Adversary in the Browser (AiTB)
An adversary exploits security vulnerabilities or inherent functionalities of a web browser, in order to manipulate traffic between two endpoints.
CAPEC-691: Spoof Open-Source Software Metadata
An adversary spoofs open-source software metadata in an attempt to masquerade malicious software as popular, maintained, and trusted.
CAPEC-692: Spoof Version Control System Commit Metadata
An adversary spoofs metadata pertaining to a Version Control System (VCS) (e.g., Git) repository's commits to deceive users into believing that the maliciously provided software is frequently maintained and originates from a trusted source.
CAPEC-693: StarJacking
An adversary spoofs software popularity metadata to deceive users into believing that a maliciously provided package is widely used and originates from a trusted source.
CAPEC-695: Repo Jacking
An adversary takes advantage of the redirect property of directly linked Version Control System (VCS) repositories to trick users into incorporating malicious code into their applications.