How severe is CVE-2025-25943?

CVE-2025-25943 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-25943 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-25943?

CVE-2025-25943 affects Axiosys Bento4. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-25943?

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-2025-25943 have an EU (EUVD) identifier?

Yes. CVE-2025-25943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4600.

When was CVE-2025-25943 published?

CVE-2025-25943 was published on 2025-02-19 and last updated on 2026-06-17.

CVE-2025-25943

CVE-2025-25943 is a high-severity vulnerability in Axiosys Bento4 with a CVSS 3.x base score of 7.8. 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-94.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-4600
Weakness: CWE-94
Affected product: Axiosys Bento4
Published: 2025-02-19
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in Bento4 v.1.6.0-641 allows a local attacker to execute arbitrary code via the AP4_Stz2Atom::AP4_Stz2Atom component located in Ap4Stz2Atom.cpp.

Frequently asked questions

What is CVE-2025-25943?: Buffer Overflow vulnerability in Bento4 v.1.6.0-641 allows a local attacker to execute arbitrary code via the AP4_Stz2Atom::AP4_Stz2Atom component located in Ap4Stz2Atom.cpp.
How severe is CVE-2025-25943?: CVE-2025-25943 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-25943 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-25943?: CVE-2025-25943 affects Axiosys Bento4. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-25943?: 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-2025-25943 have an EU (EUVD) identifier?: Yes. CVE-2025-25943 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-4600.
When was CVE-2025-25943 published?: CVE-2025-25943 was published on 2025-02-19 and last updated on 2026-06-17.

References

https://github.com/axiomatic-systems/Bento4/issues/993

Affected products (1)

cpe:2.3:a:axiosys:bento4:1.6.0-641:*:*:*:*:*:*:*

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