CVE-2023-24848

Q: What is the severity of CVE-2023-24848?

CVE-2023-24848 has a CVSS score of 8.2 (HIGH). This vulnerability allows information disclosure in Qualcomm data modems during VoLTE calls when an undefined RTCP FB line value is processed. Attackers could potentially access sensitive information from the modem's memory. Affects devices with Qualcomm chipsets that support VoLTE functionality.

8.2 HIGH

📋 TL;DR

This vulnerability allows information disclosure in Qualcomm data modems during VoLTE calls when an undefined RTCP FB line value is processed. Attackers could potentially access sensitive information from the modem's memory. Affects devices with Qualcomm chipsets that support VoLTE functionality.

💻 Affected Systems

Products:

Qualcomm chipsets with VoLTE support

Versions: Multiple Qualcomm chipset versions prior to October 2023 patches

Operating Systems: Android and other mobile OS using affected Qualcomm chipsets

Default Config Vulnerable: ⚠️ Yes

Notes: Requires VoLTE capability and specific chipset models. Check Qualcomm advisory for specific affected chipsets.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote attacker could extract sensitive information from modem memory including call metadata, device identifiers, or potentially authentication credentials.

🟠

Likely Case

Information disclosure of call-related data and potentially device identifiers during VoLTE calls.

🟢

If Mitigated

Limited information exposure with proper network segmentation and VoLTE security controls.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: LOW

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires ability to initiate or intercept VoLTE calls with crafted RTCP packets.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: October 2023 security updates

Vendor Advisory: https://www.qualcomm.com/company/product-security/bulletins/october-2023-bulletin

Restart Required: Yes

Instructions:

1. Check device manufacturer for October 2023 security updates. 2. Apply firmware updates from device manufacturer. 3. Verify Qualcomm chipset firmware is updated.

🔧 Temporary Workarounds

Disable VoLTE

android

Temporarily disable VoLTE functionality to prevent exploitation

Settings > Network & Internet > Mobile network > Preferred network type > Select non-VoLTE option

🧯 If You Can't Patch

Implement network monitoring for abnormal RTCP traffic patterns
Segment VoLTE traffic and restrict access to vulnerable devices

🔍 How to Verify

Check if Vulnerable:

Check device chipset model and firmware version against Qualcomm's October 2023 advisory

Check Version:

Settings > About phone > Android security patch level

Verify Fix Applied:

Verify device has October 2023 or later security patches installed

📡 Detection & Monitoring

Log Indicators:

Abnormal RTCP packet sizes or patterns in modem logs
Unexpected memory access patterns in modem diagnostics

Network Indicators:

Malformed RTCP packets in VoLTE traffic
Unusual RTCP feedback messages

SIEM Query:

RTCP packets with undefined FB line values OR abnormal RTCP packet sizes

📊 Metadata

CVE ID: CVE-2023-24848

CVSS v3 Score: 8.2 (HIGH)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L

CWE: CWE-126

Published: October 3, 2023

Last Updated: August 11, 2025

🔗 References

https://www.qualcomm.com/company/product-security/bulletins/october-2023-bulletin Vendor Advisory
https://www.qualcomm.com/company/product-security/bulletins/october-2023-bulletin Vendor Advisory

📋 TL;DR

💻 Affected Systems

📦 What is this software?

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Apq8037 Firmware by Qualcomm

Apq8053 Aa Firmware by Qualcomm

Apq8053 Ac Firmware by Qualcomm

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Ar8035 Firmware by Qualcomm

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Fastconnect 6800 Firmware by Qualcomm

Fastconnect 6900 Firmware by Qualcomm

Fastconnect 7800 Firmware by Qualcomm

Mdm8207 Firmware by Qualcomm

Mdm8215 Firmware by Qualcomm

Mdm8215m Firmware by Qualcomm

Mdm8615m Firmware by Qualcomm

Mdm9215 Firmware by Qualcomm

Mdm9230 Firmware by Qualcomm

Mdm9250 Firmware by Qualcomm

Mdm9310 Firmware by Qualcomm

Mdm9330 Firmware by Qualcomm

Mdm9615 Firmware by Qualcomm

Mdm9615m Firmware by Qualcomm

Mdm9628 Firmware by Qualcomm

Mdm9630 Firmware by Qualcomm

Mdm9640 Firmware by Qualcomm

Msm8108 Firmware by Qualcomm

Msm8209 Firmware by Qualcomm

Msm8608 Firmware by Qualcomm

Msm8909w Firmware by Qualcomm

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Qca6174 Firmware by Qualcomm

Qca6174a Firmware by Qualcomm

Qca6310 Firmware by Qualcomm

Qca6320 Firmware by Qualcomm

Qca6335 Firmware by Qualcomm

Qca6391 Firmware by Qualcomm

Qca6420 Firmware by Qualcomm

Qca6421 Firmware by Qualcomm

Qca6426 Firmware by Qualcomm

Qca6430 Firmware by Qualcomm

Qca6431 Firmware by Qualcomm

Qca6436 Firmware by Qualcomm

Qca6564a Firmware by Qualcomm

Qca6564au Firmware by Qualcomm

Qca6574 Firmware by Qualcomm

Qca6574a Firmware by Qualcomm

Qca6574au Firmware by Qualcomm

Qca6584 Firmware by Qualcomm

Qca6584au Firmware by Qualcomm

Qca6595au Firmware by Qualcomm

Qca6696 Firmware by Qualcomm

Qca6698aq Firmware by Qualcomm

Qca8081 Firmware by Qualcomm

Qca8337 Firmware by Qualcomm

Qca9367 Firmware by Qualcomm

Qca9377 Firmware by Qualcomm

Qcc710 Firmware by Qualcomm

Qcm2290 Firmware by Qualcomm

Qcm4290 Firmware by Qualcomm

Qcm4325 Firmware by Qualcomm

Qcm4490 Firmware by Qualcomm

Qcm6125 Firmware by Qualcomm

Qcm6490 Firmware by Qualcomm

Qcm8550 Firmware by Qualcomm

Qcn6024 Firmware by Qualcomm

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Qcn6274 Firmware by Qualcomm

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