CVE-2023-43511

Loop with Unreachable Exit Condition (Infinite Loop) in WLAN Firmware

7.5 High

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that contains IPPROTO_NONE as the next header.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.32%Up 0.3 points since Jan 3, 2024

What each source reports

CVE List Score used 7.5

Loop with Unreachable Exit Condition (Infinite Loop) in WLAN Firmware

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that contains IPPROTO_NONE as the next header.

Record: CVE-2023-43511
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-835
Updated: 2026-11-02

EUVDEUVD-2023-47917 7.5

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that contains IPPROTO_NONE as the next header.

Record: EUVD-2023-47917
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-5w5c-6hmq-mgpr 7.5

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that...

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that contains IPPROTO_NONE as the next header.

Record: GHSA-5w5c-6hmq-mgpr
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-835
Updated: 2026-11-02

NVD 7.5

Transient DOS while parsing IPv6 extension header when WLAN firmware receives an IPv6 packet that contains IPPROTO_NONE as the next header.

Record: CVE-2023-43511
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-835
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-43511 is a high vulnerability (CVSS 7.5) in Qualcomm 315 5g Iot Modem Firmware, published January 2, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

In short

References