How severe is CVE-2019-6590?

CVE-2019-6590 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6590 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6590?

CVE-2019-6590 affects F5 Big-ip Local Traffic Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-6590?

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

When was CVE-2019-6590 published?

CVE-2019-6590 was published on 2019-02-05 and last updated on 2026-06-17.

CVE-2019-6590

CVE-2019-6590 is a medium-severity vulnerability in F5 Big-ip Local Traffic Manager with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 7.1
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: F5 Big-ip Local Traffic Manager
Published: 2019-02-05
Last modified: 2026-06-17

Description

On BIG-IP LTM 13.0.0 to 13.0.1 and 12.1.0 to 12.1.3.6, under certain conditions, the TMM may consume excessive resources when processing SSL Session ID Persistence traffic.

Frequently asked questions

What is CVE-2019-6590?: On BIG-IP LTM 13.0.0 to 13.0.1 and 12.1.0 to 12.1.3.6, under certain conditions, the TMM may consume excessive resources when processing SSL Session ID Persistence traffic.
How severe is CVE-2019-6590?: CVE-2019-6590 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6590 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6590?: CVE-2019-6590 affects F5 Big-ip Local Traffic Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-6590?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6590 published?: CVE-2019-6590 was published on 2019-02-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:f5:big-ip_local_traffic_manager:*:*:*:*:*:*:*:*

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