🛡️ CVE-2025-20659 — mt2735-firmware
Description
In Modem, there is a possible system crash due to improper input validation. This could lead to remote denial of service, 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: MOLY01519028; Issue ID: MSV-2768.
How this vulnerability can be exploited
This issue can be reached from an adjacent network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector: Adjacent network — the attacker has to sit on the same local or logical network.
- Attack complexity: Low — the attack works reliably, with no preparation.
- Privileges required: None — an unauthenticated stranger can try it.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: None.
- Integrity impact: None.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
CVE-2025-20659 is classified as CWE-125: Out-of-bounds Read. The code reads past the limits of a buffer, exposing adjacent memory contents or crashing the process.
Affected software
CVE-2025-20659 is recorded against 85 packages.
- mt2735-firmware
- mt2737-firmware
- mt6739-firmware
- mt6761-firmware
- mt6762-firmware
- mt6762d-firmware
- mt6762m-firmware
- mt6763-firmware
- mt6765-firmware
- mt6765t-firmware
- mt6767-firmware
- mt6768-firmware
- mt6769-firmware
- mt6769k-firmware
- mt6769s-firmware
- mt6769t-firmware
- mt6769z-firmware
- mt6771-firmware
- mt6779-firmware
- mt6781-firmware
- mt6783-firmware
- mt6785-firmware
- mt6785t-firmware
- mt6785u-firmware
Show the remaining 61 packages
- mt6789-firmware
- mt6813-firmware
- mt6833-firmware
- mt6833p-firmware
- mt6835-firmware
- mt6835t-firmware
- mt6853-firmware
- mt6853t-firmware
- mt6855-firmware
- mt6855t-firmware
- mt6873-firmware
- mt6875-firmware
- mt6875t-firmware
- mt6877-firmware
- mt6877t-firmware
- mt6877tt-firmware
- mt6878-firmware
- mt6878m-firmware
- mt6879-firmware
- mt6880-firmware
- mt6883-firmware
- mt6885-firmware
- mt6886-firmware
- mt6889-firmware
- mt6890-firmware
- mt6891-firmware
- mt6893-firmware
- mt6895-firmware
- mt6895tt-firmware
- mt6896-firmware
- mt6897-firmware
- mt6899-firmware
- mt6980-firmware
- mt6980d-firmware
- mt6983-firmware
- mt6983t-firmware
- mt6985-firmware
- mt6985t-firmware
- mt6989-firmware
- mt6989t-firmware
- mt6990-firmware
- mt6991-firmware
- mt8666-firmware
- mt8667-firmware
- mt8673-firmware
- mt8675-firmware
- mt8676-firmware
- mt8678-firmware
- mt8765-firmware
- mt8766-firmware
- mt8768-firmware
- mt8771-firmware
- mt8781-firmware
- mt8786-firmware
- mt8788-firmware
- mt8788e-firmware
- mt8791t-firmware
- mt8796-firmware
- mt8797-firmware
- mt8798-firmware
- mt8863-firmware
Timeline and source
Published on 7 April 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
Other advisories for this package
mt2735-firmware has other advisories on record. If you are patching this one, these are worth checking on the same host:
- CVE-2026-20491 (5.5 Medium, published 3 Aug 2026)
- CVE-2026-20480 (5.5 Medium, published 3 Aug 2026)
- CVE-2026-20479 (7.5 High, published 3 Aug 2026)
- CVE-2026-20492 (5.5 Medium, published 3 Aug 2026)
- CVE-2026-20450 (6.5 Medium, published 4 May 2026)
- CVE-2026-20449 (6.5 Medium, published 4 May 2026)
- CVE-2026-20432 (8.0 High, published 7 Apr 2026)
- CVE-2026-20433 (8.8 High, published 7 Apr 2026)
Same weakness in other software
These advisories are the same class of weakness (CWE-125: Out-of-bounds Read) in other software:
- CVE-2019-16249 (published 9 Jul 2026)
- CVE-2022-23560 (8.0 High, published 9 Jul 2026)
- CVE-2019-14492 (8.0 High, published 9 Jul 2026)
- CVE-2022-23594 (8.0 High, published 9 Jul 2026)
- CVE-2017-18009 (8.0 High, published 9 Jul 2026)
- CVE-2019-14491 (8.0 High, published 9 Jul 2026)
- CVE-2022-21728 (8.0 High, published 9 Jul 2026)
- CVE-2017-12599 (8.0 High, published 9 Jul 2026)
Details
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| mt2735-firmware | — | — |
| mt2737-firmware | — | — |
| mt6739-firmware | — | — |
| mt6761-firmware | — | — |
| mt6762-firmware | — | — |
| mt6762d-firmware | — | — |
| mt6762m-firmware | — | — |
| mt6763-firmware | — | — |
| mt6765-firmware | — | — |
| mt6765t-firmware | — | — |
| mt6767-firmware | — | — |
| mt6768-firmware | — | — |
| mt6769-firmware | — | — |
| mt6769k-firmware | — | — |
| mt6769s-firmware | — | — |
| mt6769t-firmware | — | — |
| mt6769z-firmware | — | — |
| mt6771-firmware | — | — |
| mt6779-firmware | — | — |
| mt6781-firmware | — | — |
| mt6783-firmware | — | — |
| mt6785-firmware | — | — |
| mt6785t-firmware | — | — |
| mt6785u-firmware | — | — |
| mt6789-firmware | — | — |
| mt6813-firmware | — | — |
| mt6833-firmware | — | — |
| mt6833p-firmware | — | — |
| mt6835-firmware | — | — |
| mt6835t-firmware | — | — |
| mt6853-firmware | — | — |
| mt6853t-firmware | — | — |
| mt6855-firmware | — | — |
| mt6855t-firmware | — | — |
| mt6873-firmware | — | — |
| mt6875-firmware | — | — |
| mt6875t-firmware | — | — |
| mt6877-firmware | — | — |
| mt6877t-firmware | — | — |
| mt6877tt-firmware | — | — |
| mt6878-firmware | — | — |
| mt6878m-firmware | — | — |
| mt6879-firmware | — | — |
| mt6880-firmware | — | — |
| mt6883-firmware | — | — |
| mt6885-firmware | — | — |
| mt6886-firmware | — | — |
| mt6889-firmware | — | — |
| mt6890-firmware | — | — |
| mt6891-firmware | — | — |
| mt6893-firmware | — | — |
| mt6895-firmware | — | — |
| mt6895tt-firmware | — | — |
| mt6896-firmware | — | — |
| mt6897-firmware | — | — |
| mt6899-firmware | — | — |
| mt6980-firmware | — | — |
| mt6980d-firmware | — | — |
| mt6983-firmware | — | — |
| mt6983t-firmware | — | — |
| mt6985-firmware | — | — |
| mt6985t-firmware | — | — |
| mt6989-firmware | — | — |
| mt6989t-firmware | — | — |
| mt6990-firmware | — | — |
| mt6991-firmware | — | — |
| mt8666-firmware | — | — |
| mt8667-firmware | — | — |
| mt8673-firmware | — | — |
| mt8675-firmware | — | — |
| mt8676-firmware | — | — |
| mt8678-firmware | — | — |
| mt8765-firmware | — | — |
| mt8766-firmware | — | — |
| mt8768-firmware | — | — |
| mt8771-firmware | — | — |
| mt8781-firmware | — | — |
| mt8786-firmware | — | — |
| mt8788-firmware | — | — |
| mt8788e-firmware | — | — |
| mt8791t-firmware | — | — |
| mt8796-firmware | — | — |
| mt8797-firmware | — | — |
| mt8798-firmware | — | — |
| mt8863-firmware | — | — |
References
Similar Threats
- Medium CVE-2026-20449
- Medium CVE-2026-20450
- High CVE-2026-20432
- High CVE-2026-20433
Vulnerability Monitoring
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CVE-2025-20659 is rated CVSS 6.5 Medium. BotEraser monitors your WordPress installation and notifies you when software you use appears in our vulnerability database.
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