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NVD / CVE Program· CNA mitre

CVE-2020-24587: The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all

Noroxi assessment

Priority: Monitor (action score 11/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.5% (FIRST EPSS); higher than 85.2% of all records.
  • Someone on the same network segment can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
  • Fixed version: kernel-tools-libs-devel (AlmaLinux:8) 4.18.0-348.el8; firmware-nonfree (Debian:10) 20190114+really20220913-0+deb10u1; firmware-nonfree (Debian:12) 20210818-1.
  • Mentioned 3 times in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to kernel-tools-libs-devel (AlmaLinux:8) 4.18.0-348.el8; firmware-nonfree (Debian:10) 20190114+really20220913-0+deb10u1; firmware-nonfree (Debian:12) 20210818-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP encryption key is periodically renewed.

LowCVSS 2.6 · v3.1—No exploit Fix available
Published
May 11, 2021
Updated
Jun 16, 2026
EPSS
2.5% · 85th percentile

Report tools

JSON

Action score

11

Monitor

Low priority for now.

CVSS
10 / 40 · 2.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.5%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
ieeeieee 802.11
linuxmac80211
debiandebian linux
aristac-100 firmware
aristac-100
aristac-110 firmware
aristac-110
aristac-120 firmware
aristac-120
aristac-130 firmware
aristac-130
aristac-200 firmware

and 188 more

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Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • arista c-100 firmwareall versions
  • arista c-110 firmwareall versions
  • arista c-120 firmwareall versions
  • arista c-130 firmwareall versions
  • arista c-200 firmwareall versions
  • arista c-230 firmwareall versions
  • arista c-235 firmwareall versions
  • arista c-250 firmwareall versions
  • arista c-260 firmwareall versions
  • arista c-65 firmwareall versions
  • arista c-75 firmwareall versions
  • arista o-105 firmwareall versions
  • arista o-90 firmwareall versions
  • arista w-118 firmwareall versions
  • arista w-68 firmwareall versions
  • cisco 1100 firmwareall versions
  • cisco 1100-4p firmwareall versions
  • cisco 1100-8p firmwareall versions
  • cisco 1101-4p firmwareall versions
  • cisco 1109-2p firmwareall versions

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8kernel-tools-libs-develbefore 4.18.0-348.el84.18.0-348.el8
Debian:10firmware-nonfreebefore 20190114+really20220913-0+deb10u120190114+really20220913-0+deb10u1
Debian:12firmware-nonfreebefore 20210818-120210818-1
Debian:12linuxbefore 5.10.46-15.10.46-1
Debian:9linuxbefore 4.9.272-14.9.272-1
Debian:9linux-4.19before 4.19.194-1~deb9u14.19.194-1~deb9u1
openSUSE:Leap 15.2kernel-debugbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-defaultbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-default-basebefore 5.3.18-lp152.78.1.lp152.8.34.15.3.18-lp152.78.1.lp152.8.34.1
openSUSE:Leap 15.2kernel-docsbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-kvmsmallbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-obs-buildbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-obs-qabefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-preemptbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-rtbefore 5.3.18-lp152.3.14.15.3.18-lp152.3.14.1
openSUSE:Leap 15.2kernel-rt_debugbefore 5.3.18-lp152.3.14.15.3.18-lp152.3.14.1
openSUSE:Leap 15.2kernel-sourcebefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-source-rtbefore 5.3.18-lp152.3.14.15.3.18-lp152.3.14.1
openSUSE:Leap 15.2kernel-symsbefore 5.3.18-lp152.78.15.3.18-lp152.78.1
openSUSE:Leap 15.2kernel-syms-rtbefore 5.3.18-lp152.3.14.15.3.18-lp152.3.14.1
openSUSE:Leap 15.3kernel-64kbbefore 5.3.18-59.5.25.3.18-59.5.2
openSUSE:Leap 15.3kernel-azurebefore 5.3.18-38.3.15.3.18-38.3.1
openSUSE:Leap 15.3kernel-debugbefore 5.3.18-59.5.25.3.18-59.5.2
openSUSE:Leap 15.3kernel-defaultbefore 5.3.18-59.5.25.3.18-59.5.2

+96

Same product

ieee: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-47522The IEEE 802.11 specifications through 802.11ax allow physically proximate attackers to intercept (possibly cleartext) target-destined frame
    30Monitor
  • CVE-2020-24586The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that rece
    16Monitor
  • CVE-2020-24588The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the
    15Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:kernel-tools-libs-devel4.18.0-348.el8 · AlmaLinux:8Package registry (OSV)
debian:firmware-nonfree20210818-1 · Debian:12Package registry (OSV)
debian:linux5.10.46-1 · Debian:12Package registry (OSV)
debian:linux-4.194.19.194-1~deb9u1 · Debian:9Package registry (OSV)
opensuse:kernel-debug5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-default5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-default-base5.3.18-lp152.78.1.lp152.8.34.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-docs5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-kvmsmall5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-obs-build5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-obs-qa5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-preempt5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-rt5.3.18-lp152.3.14.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-rt_debug5.3.18-lp152.3.14.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-source5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
opensuse:kernel-syms5.3.18-lp152.78.1 · openSUSE:Leap 15.2Package registry (OSV)
red hat:kernel-rt0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-core0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-core0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-debuginfo0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-devel0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-kvm0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debug-modules-extra0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-debuginfo-common-x86_640:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
red hat:kernel-rt-devel0:4.18.0-348.rt7.130.el8 · Red Hat:enterprise_linux:8::nfvPackage registry (OSV)
suse:kernel-azure4.12.14-16.59.1 · SUSE:Linux Enterprise Server 12 SP5Package registry (OSV)
suse:kernel-bigmem3.0.101-108.129.1 · SUSE:Linux Enterprise Server 11 SP4-LTSSPackage registry (OSV)

+10

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone on the same network segment can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Adjacent
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-327 · Use of a Broken or Risky Cryptographic Algorithm

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records