How severe is CVE-2025-43960?

CVE-2025-43960 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2025-43960 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-43960?

CVE-2025-43960 affects Adminer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-43960?

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.

Does CVE-2025-43960 have an EU (EUVD) identifier?

Yes. CVE-2025-43960 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25694.

When was CVE-2025-43960 published?

CVE-2025-43960 was published on 2025-08-25 and last updated on 2026-06-17.

CVE-2025-43960

CVE-2025-43960 is a high-severity vulnerability in Adminer with a CVSS 3.x base score of 8.6. 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-502.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25694
Weakness: CWE-502
Affected product: Adminer
Published: 2025-08-25
Last modified: 2026-06-17

Description

Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.

Frequently asked questions

What is CVE-2025-43960?: Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.
How severe is CVE-2025-43960?: CVE-2025-43960 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2025-43960 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-43960?: CVE-2025-43960 affects Adminer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-43960?: 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.
Does CVE-2025-43960 have an EU (EUVD) identifier?: Yes. CVE-2025-43960 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25694.
When was CVE-2025-43960 published?: CVE-2025-43960 was published on 2025-08-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:adminer:adminer:4.8.1:*:*:*:*:*:*:*

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