How severe is CVE-2025-70811?

CVE-2025-70811 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-70811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-70811?

CVE-2025-70811 affects Phpbb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-70811?

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

Does CVE-2025-70811 have an EU (EUVD) identifier?

Yes. CVE-2025-70811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209385.

When was CVE-2025-70811 published?

CVE-2025-70811 was published on 2026-04-09 and last updated on 2026-06-17.

CVE-2025-70811

CVE-2025-70811 is a medium-severity vulnerability in Phpbb with a CVSS 3.x base score of 4.3. 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-352.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209385
Weakness: CWE-352
Affected product: Phpbb
Published: 2026-04-09
Last modified: 2026-06-17

Description

Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker to execute arbitrary code via the Admin Control Panel icon management functionality.

Frequently asked questions

What is CVE-2025-70811?: Cross Site Request Forgery vulnerability in Phpbb phbb3 v.3.3.15 allows a local attacker to execute arbitrary code via the Admin Control Panel icon management functionality.
How severe is CVE-2025-70811?: CVE-2025-70811 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-70811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-70811?: CVE-2025-70811 affects Phpbb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-70811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-70811 have an EU (EUVD) identifier?: Yes. CVE-2025-70811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209385.
When was CVE-2025-70811 published?: CVE-2025-70811 was published on 2026-04-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:phpbb:phpbb:3.3.15:-:*:*:*:*:*:*

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