How severe is CVE-2026-28758?

CVE-2026-28758 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-28758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-28758?

CVE-2026-28758 affects F5 Big-ip Domain Name System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-28758?

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

Does CVE-2026-28758 have an EU (EUVD) identifier?

Yes. CVE-2026-28758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29959.

When was CVE-2026-28758 published?

CVE-2026-28758 was published on 2026-05-13 and last updated on 2026-06-29.

CVE-2026-28758

CVE-2026-28758 is a medium-severity vulnerability in F5 Big-ip Domain Name System with a CVSS 3.x base score of 4.4. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v4: 6.7
EPSS exploit prediction: 0% (1st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29959
Weakness: CWE-312
Affected product: F5 Big-ip Domain Name System
Published: 2026-05-13
Last modified: 2026-06-29

Description

When BIG-IP DNS is provisioned, a vulnerability exists in the gtm_add and bigip_add iControl REST commands that return the ssh-password parameter in cleartext in the iControl REST response and is also logged in the audit log. This may allow a highly privileged, authenticated attacker with access to the audit log to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

Frequently asked questions

What is CVE-2026-28758?: When BIG-IP DNS is provisioned, a vulnerability exists in the gtm_add and bigip_add iControl REST commands that return the ssh-password parameter in cleartext in the iControl REST response and is also logged in the audit log. This may allow a highly privileged, authenticated attacker with access to the audit log to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
How severe is CVE-2026-28758?: CVE-2026-28758 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-28758 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (1st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-28758?: CVE-2026-28758 affects F5 Big-ip Domain Name System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-28758?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-28758 have an EU (EUVD) identifier?: Yes. CVE-2026-28758 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29959.
When was CVE-2026-28758 published?: CVE-2026-28758 was published on 2026-05-13 and last updated on 2026-06-29.

References

https://my.f5.com/manage/s/article/K000158070

Affected products (1)

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

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