How severe is CVE-2019-15702?

CVE-2019-15702 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-2019-15702 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15702?

CVE-2019-15702 affects Riot-os Riot. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15702?

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-2019-15702 published?

CVE-2019-15702 was published on 2019-08-27 and last updated on 2026-06-17.

CVE-2019-15702

CVE-2019-15702 is a high-severity vulnerability in Riot-os Riot 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-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-835
Affected product: Riot-os Riot
Published: 2019-08-27
Last modified: 2026-06-17

Description

In the TCP implementation (gnrc_tcp) in RIOT through 2019.07, the parser for TCP options does not terminate on all inputs, allowing a denial-of-service, because sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c has an infinite loop for an unknown zero-length option.

Frequently asked questions

What is CVE-2019-15702?: In the TCP implementation (gnrc_tcp) in RIOT through 2019.07, the parser for TCP options does not terminate on all inputs, allowing a denial-of-service, because sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c has an infinite loop for an unknown zero-length option.
How severe is CVE-2019-15702?: CVE-2019-15702 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-2019-15702 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15702?: CVE-2019-15702 affects Riot-os Riot. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15702?: 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-2019-15702 published?: CVE-2019-15702 was published on 2019-08-27 and last updated on 2026-06-17.

References

https://github.com/RIOT-OS/RIOT/issues/12086

Affected products (1)

cpe:2.3:o:riot-os:riot:*:*:*:*:*:*:*:*

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