How severe is CVE-2025-20725?

CVE-2025-20725 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-20725 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-20725?

CVE-2025-20725 primarily affects Mediatek Lr12a. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-20725?

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-2025-20725 have an EU (EUVD) identifier?

Yes. CVE-2025-20725 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37576.

When was CVE-2025-20725 published?

CVE-2025-20725 was published on 2025-11-04 and last updated on 2026-06-17.

CVE-2025-20725

CVE-2025-20725 is a high-severity vulnerability in Mediatek Lr12a 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-37576
Weakness: CWE-787
Affected product: Mediatek Lr12a
Published: 2025-11-04
Last modified: 2026-06-17

Description

In ims service, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01671924; Issue ID: MSV-4620.

Frequently asked questions

What is CVE-2025-20725?: In ims service, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01671924; Issue ID: MSV-4620.
How severe is CVE-2025-20725?: CVE-2025-20725 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-20725 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-20725?: CVE-2025-20725 primarily affects Mediatek Lr12a. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-20725?: 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-2025-20725 have an EU (EUVD) identifier?: Yes. CVE-2025-20725 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37576.
When was CVE-2025-20725 published?: CVE-2025-20725 was published on 2025-11-04 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/November-2025

Affected products (3)

cpe:2.3:o:mediatek:lr12a:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:nr15:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:nr16:-:*:*:*:*:*:*:*

More vulnerabilities in Mediatek Lr12a

CVE-2023-20819 — Critical (CVSS 9.8): In CDMA PPP protocol, there is a possible out of bounds write due to a missing bounds check. This could lead to remote…
CVE-2022-21744 — Critical (CVSS 9.8): In Modem 2G RR, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code…
CVE-2022-20083 — Critical (CVSS 9.8): In Modem 2G/3G CC, there is a possible out of bounds write due to a missing bounds check. This could lead to remote…
CVE-2024-20154 — High (CVSS 8.8): In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote code…
CVE-2024-20039 — High (CVSS 8.8): In modem protocol, there is a possible out of bounds write due to a missing bounds check. This could lead to remote…
CVE-2025-20727 — High (CVSS 8.1): In Modem, there is a possible out of bounds write due to a heap buffer overflow. This could lead to remote escalation…

All CVEs affecting Mediatek Lr12a →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →