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Debian Linux CVE-2020-24588

LOW
Use of a Broken or Risky Cryptographic Algorithm (CWE-327)
2021-05-11 cve@mitre.org
Microsoft Cisco Code Injection Debian Siemens Intel Debian Linux Linux Kernel Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Ip Phone 8861 Firmware Ip Phone 8865 Firmware Ip Phone 8821 Firmware Ieee 802 11 Mac80211 Windows 10 Windows 7 Windows 8 1 Windows Rt 8 1 Scalance W1748 1 Firmware Scalance W1750D Firmware Scalance W1788 1 Firmware Scalance W1788 2 Firmware Scalance W1788 2Ia Firmware Scalance W721 1 Firmware Scalance W722 1 Firmware Scalance W734 1 Firmware Scalance W738 1 Firmware Scalance W748 1 Firmware Scalance W761 1 Firmware Scalance W774 1 Firmware Scalance W778 1 Firmware Scalance W786 1 Firmware Scalance W786 2 Firmware Scalance W786 2Ia Firmware Scalance W788 1 Firmware Scalance W788 2 Firmware Scalance Wam763 1 Firmware Scalance Wam766 1 Firmware Scalance Wam766 1 6Ghz Firmware Scalance Wum763 1 Firmware Scalance Wum766 1 Firmware Scalance Wum766 1 6Ghz Firmware C 100 Firmware C 110 Firmware C 120 Firmware C 130 Firmware C 200 Firmware C 230 Firmware C 235 Firmware C 250 Firmware C 260 Firmware C 65 Firmware C 75 Firmware O 105 Firmware O 90 Firmware W 118 Firmware W 68 Firmware 1100 Firmware 1100 4P Firmware 1100 8P Firmware 1101 4P Firmware 1109 2P Firmware 1109 4P Firmware Aironet 1532 Firmware Aironet 1542D Firmware Aironet 1542I Firmware Aironet 1800 Firmware Aironet 1800I Firmware Aironet 1810 Firmware Aironet 1810W Firmware Aironet 1815 Firmware Aironet 1815I Firmware Aironet 1832 Firmware Aironet 1842 Firmware Aironet 1852 Firmware Aironet Ap803 Firmware Aironet Iw3702 Firmware Catalyst 9105 Firmware Catalyst 9105Axi Firmware Catalyst 9105Axw Firmware Catalyst 9115 Firmware Catalyst 9115 Ap Firmware Catalyst 9115Axe Firmware Catalyst 9115Axi Firmware Catalyst 9117 Firmware Catalyst 9117 Ap Firmware Catalyst 9117Axi Firmware Catalyst 9120 Firmware Catalyst 9120 Ap Firmware Catalyst 9120Axe Firmware Catalyst 9120Axi Firmware Catalyst 9120Axp Firmware Catalyst 9124 Firmware Catalyst 9124Axd Firmware Catalyst 9124Axi Firmware Catalyst 9130 Firmware Catalyst 9130 Ap Firmware Catalyst 9130Axe Firmware Catalyst 9130Axi Firmware Ip Phone 6861 Firmware Ip Phone 8832 Firmware Ir829 2Lte Ea Ak9 Firmware Ir829 2Lte Ea Bk9 Firmware Ir829 2Lte Ea Ek9 Firmware Ir829Gw Lte Ga Ck9 Firmware Ir829Gw Lte Ga Ek9 Firmware Ir829Gw Lte Ga Sk9 Firmware Ir829Gw Lte Ga Zk9 Firmware Ir829Gw Lte Na Ak9 Firmware Ir829Gw Lte Vz Ak9 Firmware Meraki Gr10 Firmware Meraki Gr60 Firmware Meraki Mr12 Firmware Meraki Mr20 Firmware Meraki Mr26 Firmware Meraki Mr30H Firmware Meraki Mr32 Firmware Meraki Mr33 Firmware Meraki Mr34 Firmware Meraki Mr36 Firmware Meraki Mr42 Firmware Meraki Mr42E Firmware Meraki Mr44 Firmware Meraki Mr45 Firmware Meraki Mr46 Firmware Meraki Mr46E Firmware Meraki Mr52 Firmware Meraki Mr53 Firmware Meraki Mr53E Firmware Meraki Mr55 Firmware Meraki Mr56 Firmware Meraki Mr62 Firmware Meraki Mr66 Firmware Meraki Mr70 Firmware Meraki Mr72 Firmware Meraki Mr74 Firmware Meraki Mr76 Firmware Meraki Mr84 Firmware Meraki Mr86 Firmware Meraki Mx64W Firmware Meraki Mx65W Firmware Meraki Mx67Cw Firmware Meraki Mx67W Firmware Meraki Mx68Cw Firmware Meraki Mx68W Firmware Meraki Z3 Firmware Meraki Z3C Firmware Webex Board 55 Firmware Webex Board 55S Firmware Webex Board 70 Firmware Webex Board 70S Firmware Webex Board 85S Firmware Webex Dx70 Firmware Webex Dx80 Firmware Webex Room 55 Firmware Webex Room 55 Dual Firmware Webex Room 70 Firmware Webex Room 70 Dual Firmware Webex Room 70 Dual G2 Firmware Webex Room 70 Single Firmware Webex Room 70 Single G2 Firmware Webex Room Kit Firmware Webex Room Kit Mini Firmware Ac 8260 Firmware Ac 8265 Firmware Ac 9260 Firmware Ac 9560 Firmware Killer Ac 1550 Firmware Killer Wi Fi 6 Ax1650 Firmware Killer Wi Fi 6E Ax1675 Firmware Proset Ac 3165 Firmware Proset Ac 3168 Firmware Proset Ac 8260 Firmware Proset Ac 8265 Firmware Proset Ac 9260 Firmware Proset Ac 9461 Firmware Proset Ac 9462 Firmware Proset Ac 9560 Firmware Proset Wi Fi 6 Ax200 Firmware Proset Wi Fi 6 Ax201 Firmware Proset Wi Fi 6E Ax210 Firmware Proset Wireless 7265 Rev D Firmware Wi Fi 6 Ax200 Firmware Wi Fi 6 Ax201 Firmware Arista Ieee
3.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V11 - Cryptography Approved algorithm selection
Impact

CVSS score of 3.5 (LOW). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, user interaction required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.31%.

Exploit ScenarioDerived

Successful exploitation could compromise the low-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 0.3% exploitation probability (EPSS)

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AnalysisAI

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is. Rated low severity (CVSS 3.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-327. The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets. Affected products include: Ieee Ieee 802.11, Linux Mac80211, Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.5 LOW
AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionCVE.org

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.

Threat Intelligence Overview

Threat Score
4.2/10
Composite threat intelligence
EPSS Score
0.3%
Top 46% exploitable
Threat Intel
1
1 source
Exploit
POC
Public exploit code exists
Data Quality
6 sources
Confidence: High
NVD CVE.org EPSS CISA GitHub VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC Yes
EPSS 0.3%
Patch available Yes
Active threat Yes
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
Poc
System Exposure· derived
Controlled
Automatable· derived
No
Human Impact· derived
Low

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +18
PoC: +20
Weaponized: 0
Threat intel: +10
Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Affected Products (CPE)CVE.org

cpe:2.3:a:ieee:ieee_802.11:*:*:*:*:*:*:*:*
cpe:2.3:a:linux:mac80211:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:-:r2:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
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Threat IntelligenceMISP

CISA Advisories
Sources: CISA (public domain)

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