CVE-2023-39949— Improper validation of sequence numbers leading to remotely reachable assertion failure
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I. Basic Information for CVE-2023-39949
Vulnerability Information
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Vulnerability Title
Improper validation of sequence numbers leading to remotely reachable assertion failure
Source: NVD (National Vulnerability Database)
Vulnerability Description
eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可达断言
Source: NVD (National Vulnerability Database)
Vulnerability Title
eProsima Fast DDS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 2.9.1之前版本存在安全漏洞，该漏洞源于序列号验证不当可能会导致远程可达断言失败，从而导致Fast-DDS 进程崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-39949
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- https://github.com/eProsima/Fast-DDS/issues/3236x_refsource_MISC
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-3jv9-j9x3-95cgx_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2023-39949
Same Patch Batch · eProsima · 2023-08-11 · 6 CVEs total
| CVE-2023-39947 | 8.2 HIGH | Another heap overflow in push_back_helper |
| CVE-2023-39946 | 8.2 HIGH | Heap overflow in push_back_helper due to a CDR message |
| CVE-2023-39945 | 8.2 HIGH | Malformed serialized data in a data submessage leads to unhandled exception |
| CVE-2023-39948 | 7.5 HIGH | Uncaught fastcdr exception (Unexpected CDR type received) crashing fastdds |
| CVE-2023-39534 | 7.5 HIGH | Malformed GAP submessage triggers assertion failure |
IV. Related Vulnerabilities
Same product: Fast-DDS
- CVE-2025-64438
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABL - CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated
Same vendor: eProsima
- CVE-2025-64438
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABL - CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated
Same weakness: CWE-617
- CVE-2026-8257
WebAssembly Binaryen BrOn wasm-ir-builder.cpp makeBrOn asser - CVE-2026-41584
ZEBRA: rk Identity Point Panic in Transaction Verification - CVE-2026-20450
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Kyverno Controller Denial of Service via forEach Mutation Pa - CVE-2026-34067
nimiq-transaction vulnerable to panic via `HistoryTreeProof`
V. Comments for CVE-2023-39949
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