How severe is CVE-2025-66252?

CVE-2025-66252 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-66252 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-66252?

CVE-2025-66252 primarily affects Dbbroadcast Mozart Next 100 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-66252?

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-2025-66252 have an EU (EUVD) identifier?

Yes. CVE-2025-66252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199680.

When was CVE-2025-66252 published?

CVE-2025-66252 was published on 2025-11-26 and last updated on 2026-06-17.

CVE-2025-66252

CVE-2025-66252 is a high-severity vulnerability in Dbbroadcast Mozart Next 100 Firmware with a CVSS 3.x base score of 7.5. 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-835.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.4
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199680
Weakness: CWE-835
Affected product: Dbbroadcast Mozart Next 100 Firmware
Published: 2025-11-26
Last modified: 2026-06-17

Description

Infinite Loop Denial of Service via Failed File Deletion in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Infinite loop when unlink() fails in status_contents.php causing DoS. Due to the fact that the unlink operation is done in a while loop; if an immutable file is specified or otherwise a file in which the process has no permissions to delete; it would repeatedly attempt to do in a loop.

Frequently asked questions

What is CVE-2025-66252?: Infinite Loop Denial of Service via Failed File Deletion in DB Electronica Telecomunicazioni S.p.A. Mozart FM Transmitter versions 30, 50, 100, 300, 500, 1000, 2000, 3000, 3500, 6000, 7000 allows an attacker to perform Infinite loop when unlink() fails in status_contents.php causing DoS. Due to the fact that the unlink operation is done in a while loop; if an immutable file is specified or otherwise a file in which the process has no permissions to delete; it would repeatedly attempt to do in a loop.
How severe is CVE-2025-66252?: CVE-2025-66252 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-66252 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-66252?: CVE-2025-66252 primarily affects Dbbroadcast Mozart Next 100 Firmware. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-66252?: 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-2025-66252 have an EU (EUVD) identifier?: Yes. CVE-2025-66252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199680.
When was CVE-2025-66252 published?: CVE-2025-66252 was published on 2025-11-26 and last updated on 2026-06-17.

References

https://www.abdulmhsblog.com/posts/webfmvulns/

Affected products (22)

cpe:2.3:o:dbbroadcast:mozart_next_100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_2000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_30_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_3000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_3500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_50_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_6000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_next_7000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_30_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_50_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_1000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_2000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_3000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_3500_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_6000_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:dbbroadcast:mozart_dds_next_7000_firmware:-:*:*:*:*:*:*:*

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CVE-2025-66262 — Critical (CVSS 9.8): Arbitrary File Overwrite via Tar Extraction Path Traversal in DB Electronica Telecomunicazioni S.p.A. Mozart FM…
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CVE-2025-66259 — Critical (CVSS 9.8): Authenticated Root Remote Code Execution via improrer user input filtering in DB Electronica Telecomunicazioni S.p.A.…
CVE-2025-66256 — Critical (CVSS 9.8): Unauthenticated Arbitrary File Upload (patch_contents.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM…
CVE-2025-66255 — Critical (CVSS 9.8): Unauthenticated Arbitrary File Upload (upgrade_contents.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM…
CVE-2025-66253 — Critical (CVSS 9.8): Unauthenticated OS Command Injection (start_upgrade.php) in DB Electronica Telecomunicazioni S.p.A. Mozart FM…

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