Is CVE-2025-55661 in the CISA KEV catalog?

No. CVE-2025-55661 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-55661?

CVE-2025-55661 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2025-55661?

CVE-2025-55661 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-55661?

Upgrade gpac to 26.02.0 or later.

CVE & CISA-KEV Catalog

CVE-2025-55661

MEDIUM

5.5

CVSS v3

NVD

Description

A heap buffer overflow in the Opus audio stream parser component of GPAC MP4Box v2.4 allows attackers to cause a Denial of Service (DoS) via supplying a crafted MP4 file.

CWE-122Heap-based Buffer Overflow

How to fix

Remediation Available

gpacNVD

Affected:< 26.02.0Fixed in:26.02.0CVE-2025-55661derived 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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Patch1

infosec.exchange

Exploit1

openwall.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 2026-06-17.