Eclipse Wakaama CoAP Block1 Handler Unbounded Memory Allocation DoS
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| eclipse-wakaama | wakaama | affected |
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No data.
No data.
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| Eclipse | Wakaama |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.923% probability within 30 days)
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| CPEs | cpe:2.3:a:eclipse:wakaama:*:*:*:*:*:*:*:* |
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| First Time appeared |
Eclipse
Eclipse wakaama |
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| Vendors & Products |
Eclipse
Eclipse wakaama |
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| Metrics |
ssvc
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| Description | Eclipse Wakaama before snapshot/2026-05-26 contains an unbounded memory allocation vulnerability in the CoAP Block1 handler within coap/block.c that allows unauthenticated remote attackers to exhaust server memory by sending a sequence of Block1 PUT requests with incrementing block numbers. Attackers can target the registration endpoint over UDP without authentication, causing the server to repeatedly reallocate a growing accumulation buffer by appending each block payload without enforcing any maximum total size limit, resulting in denial of service through memory exhaustion. | |
| Title | Eclipse Wakaama CoAP Block1 Handler Unbounded Memory Allocation DoS | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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