How severe is CVE-2017-12087?

CVE-2017-12087 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-12087 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12087?

CVE-2017-12087 affects Tinysvcmdns Project Tinysvcmdns. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12087?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-12087 published?

CVE-2017-12087 was published on 2018-04-24 and last updated on 2026-06-17.

CVE-2017-12087

CVE-2017-12087 is a critical-severity vulnerability in Tinysvcmdns Project Tinysvcmdns with a CVSS 3.x base score of 10.0. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Tinysvcmdns Project Tinysvcmdns
Published: 2018-04-24
Last modified: 2026-06-17

Description

An exploitable heap overflow vulnerability exists in the tinysvcmdns library version 2016-07-18. A specially crafted packet can make the library overwrite an arbitrary amount of data on the heap with attacker controlled values. An attacker needs send a dns packet to trigger this vulnerability.

Frequently asked questions

What is CVE-2017-12087?: An exploitable heap overflow vulnerability exists in the tinysvcmdns library version 2016-07-18. A specially crafted packet can make the library overwrite an arbitrary amount of data on the heap with attacker controlled values. An attacker needs send a dns packet to trigger this vulnerability.
How severe is CVE-2017-12087?: CVE-2017-12087 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-12087 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12087?: CVE-2017-12087 affects Tinysvcmdns Project Tinysvcmdns. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12087?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-12087 published?: CVE-2017-12087 was published on 2018-04-24 and last updated on 2026-06-17.

References

https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0439

Affected products (1)

cpe:2.3:a:tinysvcmdns_project:tinysvcmdns:2016-07-18:*:*:*:*:*:*:*

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