CVE-2026-26453
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 版本中， 函数存在空指针解引用漏洞。当服务器处理包含 URI_PATH 选项且其数据指针为 NULL 的 COAP 消息时，若服务器在选项中查找匹配字符串 "separate" 的 URI_PATH 选项，它会直接对 调用 ，而未检查该指针是否为 NULL。当选项的 data 字段为 NULL 时，这将导致段错误（Segmentation Fault）。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-26453
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
ccoap 77f55c4b466e99327c24ace8a2913d3ba7e2ccd5 contains a null pointer dereference vulnerability in the coap_server_handle_session() function when processing COAP messages containing URI_PATH options with NULL data pointers. When the server searches for a URI_PATH option matching the string "separate", it directly calls strncmp() on option_list[i].data without checking if the pointer is NULL. This causes a segmentation fault when the option's data field is NULL.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
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II. Public POCs for CVE-2026-26453
| # | POC Description | Source Link | Shenlong Link |
|---|
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Proof of Concept for CVE-2026-26453 (2)
Same Patch Batch · n/a · 2026-08-27 · 28 CVEs total
| CVE-2026-30051 | free5gc 4.1.0 CreateUEContextProcedure DoS | |
| CVE-2026-30070 | free5gc v4.0.1 HandleGetSharedData拒绝服务漏洞 | |
| CVE-2026-30069 | free5gc v4.0.1 UDMC空指针解引用致DoS | |
| CVE-2026-30057 | free5gc v4.1.0 拒绝服务漏洞 | |
| CVE-2026-30050 | free5gc v4.1.0 ModifyAMFEventSubscriptionProcedure DoS | |
| CVE-2026-30056 | free5gc v4.0.1空指针引用致拒绝服务 | |
| CVE-2026-30072 | free5gc v4.0.1空指针解引用致拒绝服务 | |
| CVE-2026-30060 | free5gc v4.0.1 SUCI解析致DoS漏洞 | |
| CVE-2026-30046 | Open5GS v2.7.6 NUDM-UECM断言拒绝服务 | |
| CVE-2026-30068 | free5gc v4.0.1输入验证缺陷致DoS | |
| CVE-2026-30058 | free5gc 4.0.1 HTTPModifySubscription DoS漏洞 | |
| CVE-2026-30059 | free5gc v4.0.1 NAS解码器拒绝服务漏洞 | |
| CVE-2026-30063 | free5gc v4.0.1 NF发现端点DoS漏洞 | |
| CVE-2026-30067 | free5gc 4.0.1 NRF DoS漏洞 | |
| CVE-2026-75357 | B站桌面端1.17.9远程代码执行漏洞 | |
| CVE-2026-30045 | open5gs v2.7.6 NF-INSTANCES整数溢出致DoS | |
| CVE-2026-30073 | free5gc v4.0.1 DoS漏洞 | |
| CVE-2026-30071 | free5gc 4.0.1 RechargePut函数拒绝服务漏洞 | |
| CVE-2026-30062 | free5gc v4.0.1 NGAP处理器拒绝服务漏洞 | |
| CVE-2026-30064 | free5gc v4.0.1 buildFilter输入验证不当导致拒绝服务 |
Showing top 20 of 28 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-26453
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