How severe is CVE-2017-7243?

CVE-2017-7243 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-2017-7243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-7243?

CVE-2017-7243 affects Eclipse Tinydtls. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-7243?

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.

When was CVE-2017-7243 published?

CVE-2017-7243 was published on 2017-03-24 and last updated on 2026-06-17.

CVE-2017-7243

CVE-2017-7243 is a high-severity vulnerability in Eclipse Tinydtls 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Eclipse Tinydtls
Published: 2017-03-24
Last modified: 2026-06-17

Description

Eclipse tinydtls 0.8.2 for Eclipse IoT allows remote attackers to cause a denial of service (DTLS peer crash) by sending a "Change cipher spec" packet without pre-handshake.

Frequently asked questions

What is CVE-2017-7243?: Eclipse tinydtls 0.8.2 for Eclipse IoT allows remote attackers to cause a denial of service (DTLS peer crash) by sending a "Change cipher spec" packet without pre-handshake.
How severe is CVE-2017-7243?: CVE-2017-7243 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-2017-7243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-7243?: CVE-2017-7243 affects Eclipse Tinydtls. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-7243?: 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.
When was CVE-2017-7243 published?: CVE-2017-7243 was published on 2017-03-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eclipse:tinydtls:0.8.2:*:*:*:*:*:*:*

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