How severe is CVE-2026-36499?

CVE-2026-36499 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-36499 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-36499?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-36499 have an EU (EUVD) identifier?

Yes. CVE-2026-36499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34317.

When was CVE-2026-36499 published?

CVE-2026-36499 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-36499

CVE-2026-36499 is a medium-severity vulnerability with a CVSS 3.x base score of 6.5. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34317
Weakness: CWE-770
Published: 2026-06-04
Last modified: 2026-06-17

Description

A missing upper-bound check in the udpif_set_threads() function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service (DoS) via resource exhaustion.

Frequently asked questions

What is CVE-2026-36499?: A missing upper-bound check in the udpif_set_threads() function of Open vSwitch v3.6.90 allows an attacker with OVSDB write access to request an excessive number of handler or revalidation threads. This can cause a denial of service (DoS) via resource exhaustion.
How severe is CVE-2026-36499?: CVE-2026-36499 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-36499 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-36499?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-36499 have an EU (EUVD) identifier?: Yes. CVE-2026-36499 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34317.
When was CVE-2026-36499 published?: CVE-2026-36499 was published on 2026-06-04 and last updated on 2026-06-17.

References

https://github.com/majdlatah/OVS-Other-Config-Bug

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