How severe is CVE-2019-18936?

CVE-2019-18936 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-2019-18936 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-18936?

CVE-2019-18936 affects Bloq Univalue. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-18936?

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-2019-18936 published?

CVE-2019-18936 was published on 2020-03-21 and last updated on 2026-06-17.

CVE-2019-18936

CVE-2019-18936 is a high-severity vulnerability in Bloq Univalue 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-674.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-674
Affected product: Bloq Univalue
Published: 2020-03-21
Last modified: 2026-06-17

Description

UniValue::read() in UniValue before 1.0.5 allow attackers to cause a denial of service (the class internal data reaches an inconsistent state) via input data that triggers an error.

Frequently asked questions

What is CVE-2019-18936?: UniValue::read() in UniValue before 1.0.5 allow attackers to cause a denial of service (the class internal data reaches an inconsistent state) via input data that triggers an error.
How severe is CVE-2019-18936?: CVE-2019-18936 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-2019-18936 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18936?: CVE-2019-18936 affects Bloq Univalue. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18936?: 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-2019-18936 published?: CVE-2019-18936 was published on 2020-03-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bloq:univalue:*:*:*:*:*:*:*:*

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