Common Weakness Enumeration
CWE-502
AllowedDeserialization of Untrusted Data
Abstraction: Base · Status: Draft
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
5669 vulnerabilities reference this CWE, most recent first.
CVE-2026-13046 (GCVE-0-2026-13046)
Vulnerability from cvelistv5 – Published: 2026-09-29 23:05 – Updated: 2026-10-01 03:55
VLAI
EPSS
VEX
Title
Fireware OS Deserialization of Untrusted Data in samld Allows Remote Code Execution
Summary
A deserialization of untrusted data vulnerability in WatchGuard Fireware OS's SAML single sign-on session handling (samld) allows an attacker who has already obtained the ability to write files on the appliance to execute arbitrary code in the context of the samld service by causing samld to load a maliciously crafted session file.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://psirt.watchguard.com/CVE-2026-13046 | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| WatchGuard | Fireware OS |
Affected:
2026.3 , < 2026.3.2
(custom)
Affected: 2025.0 , < 2026.2.3 (custom) Affected: 12.0 , < 12.12.3 (custom) |
|
| WatchGuard | Fireware OS |
Affected:
12.11 , < 12.11.10
(custom)
|
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CVE-2026-12787 (GCVE-0-2026-12787)
Vulnerability from cvelistv5 – Published: 2026-06-21 07:30 – Updated: 2026-06-22 17:18
VLAI
EPSS
VEX
Title
zhilink 智互联(深圳)科技有限公司 ADP Application Developer Platform 应用开发者平台 testConnection Endpoint deserialization
Summary
A vulnerability was found in zhilink 智互联(深圳)科技有限公司 ADP Application Developer Platform 应用开发者平台 1.0.0. This affects an unknown part of the component testConnection Endpoint. The manipulation of the argument jdbcUrl results in deserialization. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:18 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/372529 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/372529/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-12787 | third-party-advisory |
| https://vuldb.com/submit/835654 | third-party-advisory |
| https://ucn9h68n9289.feishu.cn/docx/I8uZdkZL3oSqB… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| zhilink 智互联(深圳)科技有限公司 | ADP Application Developer Platform 应用开发者平台 |
Affected:
1.0.0
cpe:2.3:a:zhilink_:adp_application_developer_platform_:*:*:*:*:*:*:*:* |
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CVE-2026-12745 (GCVE-0-2026-12745)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:22 – Updated: 2026-09-09 04:26
VLAI
EPSS
VEX
Summary
A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote unauthenticated attacker to execute arbitrary code on the server.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Neurons for ITSM |
Unaffected:
2026.2
|
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CVE-2026-12744 (GCVE-0-2026-12744)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:20 – Updated: 2026-09-09 04:26
VLAI
EPSS
VEX
Summary
A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote unauthenticated attacker to execute arbitrary code on the server.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Neurons for ITSM |
Unaffected:
2026.2
|
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CVE-2026-12651 (GCVE-0-2026-12651)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:26 – Updated: 2026-09-09 04:26
VLAI
EPSS
VEX
Summary
A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Neurons for ITSM |
Unaffected:
2026.2
|
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CVE-2026-12650 (GCVE-0-2026-12650)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:33 – Updated: 2026-09-09 04:26
VLAI
EPSS
VEX
Summary
A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Neurons for ITSM |
Unaffected:
2026.2
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CVE-2026-12648 (GCVE-0-2026-12648)
Vulnerability from cvelistv5 – Published: 2026-09-08 14:36 – Updated: 2026-09-09 04:26
VLAI
EPSS
VEX
Summary
A Deserialization of Untrusted Data vulnerability in Ivanti Neurons for ITSM before 2026.2 allows a remote authenticated attacker to execute arbitrary code on the server.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Neurons for ITSM |
Unaffected:
2026.2
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CVE-2026-12626 (GCVE-0-2026-12626)
Vulnerability from cvelistv5 – Published: 2026-10-10 06:40 – Updated: 2026-10-11 16:55
VLAI
EPSS
VEX
Title
Online Scheduling and Appointment Booking System <= 28.2 - Authenticated (Custom+) PHP Object Injection via 'value' Parameter
Summary
The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 28.2 via deserialization of untrusted input via the ‘value’ parameter. This makes it possible for authenticated attackers, with custom-level access and above, to inject a PHP Object. No known gadget chain is available.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 16:40 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ladela | Online Scheduling and Appointment Booking System – Bookly |
Affected:
0 , ≤ 28.2
(semver)
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CVE-2026-12578 (GCVE-0-2026-12578)
Vulnerability from cvelistv5 – Published: 2026-06-30 07:20 – Updated: 2026-06-30 12:50
VLAI
EPSS
VEX
Title
DTMSoft - Deserialization of Untrusted Data Vulnerability
Summary
The affected product is vulnerable to a deserialization of untrusted data, which may allow an attacker to execute arbitrary code.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 12:49 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Impacted products
Date Public
2026-06-25 01:36
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CVE-2026-12569 (GCVE-0-2026-12569)
Vulnerability from cvelistv5 – Published: 2026-06-18 00:11 – Updated: 2026-08-01 03:55
VLAI
EPSS
VEX
Title
Remote Code Execution (RCE) vulnerability in Windchill PDMlink
Summary
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill PDMlink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data. * This advisory also applies to all CPS versions
* The identified vulnerability also impacts Windchill and FlexPLM releases prior to 11.0 M030
Severity
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 00:00 UTC
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.ptc.com/en/support/article/CS473270 | vendor-advisorymitigationpermissions-required |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| PTC | Windchill PDMLink |
Affected:
0 , ≤ 11.0 M030
(semver)
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.2.0 Affected: 12.1.2.0 Affected: 13.0.2.0 Affected: 13.1.0.0 Affected: 13.1.1.0 Affected: 13.1.2.0 Affected: 13.1.3.0 |
|
| PTC | FlexPLM |
Affected:
0 , ≤ 11.0 M030
(semver)
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.0.0 Affected: 12.0.2.0 Affected: 12.1.2.0 Affected: 12.1.3.0 Affected: 13.0.2.0 Affected: 13.0.3.0 |
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Mitigation
Architecture and Design
Implementation
If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
Mitigation
Implementation
When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
Mitigation
Implementation
Explicitly define a final object() to prevent deserialization.
Mitigation
Architecture and Design
Implementation
- Make fields transient to protect them from deserialization.
- An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
Mitigation
Implementation
Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.
Mitigation
Architecture and Design
Implementation
Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.
Mitigation MIT-29
Operation
Strategy: Firewall
Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
CAPEC-586: Object Injection
An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.