Is CVE-2025-43878 in the CISA KEV catalog?

No. CVE-2025-43878 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-43878?

CVE-2025-43878 has a CVSS v3 base score of 6.0 (MEDIUM).

What is the EPSS score for CVE-2025-43878?

CVE-2025-43878 has an EPSS score of 0.14% (4th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43878?

Upgrade f5os-a to 1.8.0 or later.

CVE & CISA-KEV Catalog

CVE-2025-43878

MEDIUM

6.0

CVSS v3

NVD

Description

When running in Appliance mode, an authenticated attacker assigned the Administrator or Resource Administrator role may be able to bypass Appliance mode restrictions utilizing system diagnostics tcpdump command utility on a F5OS-C/A system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CWE-149 CWE-1286

How to fix

Remediation Available

f5os-aNVD

Affected:>= 1.5.1, < 1.8.0Fixed in:1.8.0CVE-2025-43878derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.14%probability of exploitation in 30 days

4thpercentile

Low risk: more likely to be exploited than 4% of all known CVEs.

References

Vendor Advisory1

my.f5.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-07.