CVE-2024-42645
CVE-2024-42645 is a high-severity vulnerability in Flashmq with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-617.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-54829
- Weakness: CWE-617
- Affected product: Flashmq
- Published:
- Last modified:
Description
An issue in FlashMQ v1.14.0 allows attackers to cause an assertion failure via sending a crafted retain message, leading to a Denial of Service (DoS).
Frequently asked questions
- What is CVE-2024-42645?
- An issue in FlashMQ v1.14.0 allows attackers to cause an assertion failure via sending a crafted retain message, leading to a Denial of Service (DoS).
- How severe is CVE-2024-42645?
- CVE-2024-42645 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2024-42645 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-42645?
- CVE-2024-42645 affects Flashmq. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-42645?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-42645 have an EU (EUVD) identifier?
- Yes. CVE-2024-42645 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-54829.
- When was CVE-2024-42645 published?
- CVE-2024-42645 was published on 2025-07-29 and last updated on 2026-06-17.
References
- https://github.com/halfgaar/FlashMQ
- https://github.com/songxpu/bug_report/blob/master/MQTT/FlashMQ/CVE-2024-42645.md
- https://www.flashmq.org/2024/06/17/flashmq-1-15-1-released/
Affected products (1)
- cpe:2.3:a:flashmq:flashmq:1.14.0:*:*:*:*:*:*:*
More vulnerabilities in Flashmq
- CVE-2024-42644 — High (CVSS 7.5): FlashMQ v1.14.0 was discovered to contain an assertion failure in the function PublishCopyFactory::getNewPublish, which…
- CVE-2025-62723 — Medium (CVSS 4.3): FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.23.2, any authenticated user…
Other CWE-617 (Reachable Assertion) vulnerabilities
- CVE-2020-3615 — Critical (CVSS 9.8): Valid deauth/disassoc frames is dropped in case if RMF is enabled and some rouge peer keep on sending rogue…
- CVE-2019-9795 — Critical (CVSS 9.8): A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by…
- CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
- CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
- CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
- CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.