intelligence_src_350d40f2cc69277bca
- Source-provided label
- Publisher RSS metadata
- Evidence class
- mentioned in report
- Confidence
- Not reported
- Observed
- Oct 01, 2025 00:00 UTC
- Retrieved
- Oct 13, 2026 08:35 UTC
MSV-4627: Mediatek Baseband Null Dereference During Parsing Empty SDP Bandwidth Field
An attacker sending a malformed SIP message over VoLTE to a device with a Mediatek baseband can trigger the vulnerability described here. The impact is DoS in the baseband, triggered by malformed VoLTE message such as SIP INVITE or MESSAGE request. The vulnerability described in this advisory affected a wide range of Mediatek devices. This vulnerability is assigned CVE-2025-20725. Vulnerability Details Crash happens due to a NULL access. int sdp_msg_unpack_bandwidth(char **param_1,undefined *param_2) { iVar2 = sdp_msg_unpack_string_list.constprop.26(param_1,0x62,-1,(undefined *)&uStack_1c); if (iVar2 == 0) { puVar7 = &uStack_1c; local_20 = (char *)0x0; while ((char *)puVar7[1] != (char *)0x0) { puVar3 = (uint *)voip_strtok_r((char *)puVar7[1],":",&local_20); // [1] *(undefined4 *)(param_2 + 4) = 0; bVar1 = sdp_msg_unpack_type(5,5,-0x6e41ac2c,puVar3,(int *)(param_2 + 4),(uint **)0x0); .
Reference details
- Source category
- research-report
- First reported
- Oct 01, 2025 00:00 UTC
- Last reported
- Oct 01, 2025 00:00 UTC
- Catalog updated
- Oct 13, 2026 08:35 UTC
- Record ID
b6e3e0ce9b9110415721f40cd7fbf7b66d231f386b6d3563cc12f181758552d6
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