How severe is CVE-2024-42483?

CVE-2024-42483 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2024-42483 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-42483?

CVE-2024-42483 affects Espressif Esp-now. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-42483?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-42483 have an EU (EUVD) identifier?

Yes. CVE-2024-42483 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39641.

When was CVE-2024-42483 published?

CVE-2024-42483 was published on 2024-09-12 and last updated on 2026-06-17.

CVE-2024-42483

CVE-2024-42483 is a medium-severity vulnerability in Espressif Esp-now with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-39641
Weakness: CWE-345
Affected product: Espressif Esp-now
Published: 2024-09-12
Last modified: 2026-06-17

Description

ESP-NOW Component provides a connectionless Wi-Fi communication protocol. An replay attacks vulnerability was discovered in the implementation of the ESP-NOW because the caches is not differentiated by message types, it is a single, shared resource for all kinds of messages, whether they are broadcast or unicast, and regardless of whether they are ciphertext or plaintext. This can result an attacker to clear the cache of its legitimate entries, there by creating an opportunity to re-inject previously captured packets. This vulnerability is fixed in 2.5.2.

Frequently asked questions

What is CVE-2024-42483?: ESP-NOW Component provides a connectionless Wi-Fi communication protocol. An replay attacks vulnerability was discovered in the implementation of the ESP-NOW because the caches is not differentiated by message types, it is a single, shared resource for all kinds of messages, whether they are broadcast or unicast, and regardless of whether they are ciphertext or plaintext. This can result an attacker to clear the cache of its legitimate entries, there by creating an opportunity to re-inject previously captured packets. This vulnerability is fixed in 2.5.2.
How severe is CVE-2024-42483?: CVE-2024-42483 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2024-42483 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-42483?: CVE-2024-42483 affects Espressif Esp-now. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-42483?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-42483 have an EU (EUVD) identifier?: Yes. CVE-2024-42483 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-39641.
When was CVE-2024-42483 published?: CVE-2024-42483 was published on 2024-09-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:espressif:esp-now:*:*:*:*:*:*:*:*

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