How severe is CVE-2025-48935?

CVE-2025-48935 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-48935 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-48935?

CVE-2025-48935 affects Deno. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-48935?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-48935 have an EU (EUVD) identifier?

Yes. CVE-2025-48935 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16915.

When was CVE-2025-48935 published?

CVE-2025-48935 was published on 2025-06-04 and last updated on 2026-06-17.

CVE-2025-48935

CVE-2025-48935 is a critical-severity vulnerability in Deno with a CVSS 3.x base score of 9.1. 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-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 5.5
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-16915
Weakness: CWE-863
Affected product: Deno
Published: 2025-06-04
Last modified: 2026-06-17

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 2.2.0 and prior to versions 2.2.5, it is possible to bypass Deno's permission read/write db permission check by using `ATTACH DATABASE` statement. Version 2.2.5 contains a patch for the issue.

Frequently asked questions

What is CVE-2025-48935?: Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 2.2.0 and prior to versions 2.2.5, it is possible to bypass Deno's permission read/write db permission check by using `ATTACH DATABASE` statement. Version 2.2.5 contains a patch for the issue.
How severe is CVE-2025-48935?: CVE-2025-48935 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-48935 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-48935?: CVE-2025-48935 affects Deno. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-48935?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-48935 have an EU (EUVD) identifier?: Yes. CVE-2025-48935 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-16915.
When was CVE-2025-48935 published?: CVE-2025-48935 was published on 2025-06-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*

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