How severe is CVE-2024-33453?

CVE-2024-33453 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2024-33453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-33453?

CVE-2024-33453 affects Espressif Esp-idf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-33453?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-33453 have an EU (EUVD) identifier?

Yes. CVE-2024-33453 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31191.

When was CVE-2024-33453 published?

CVE-2024-33453 was published on 2024-10-17 and last updated on 2026-06-17.

CVE-2024-33453

CVE-2024-33453 is a high-severity vulnerability in Espressif Esp-idf with a CVSS 3.x base score of 8.1. 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-120.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-31191
Weakness: CWE-120
Affected product: Espressif Esp-idf
Published: 2024-10-17
Last modified: 2026-06-17

Description

Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to obtain sensitive information via the externalId component.

Frequently asked questions

What is CVE-2024-33453?: Buffer Overflow vulnerability in esp-idf v.5.1 allows a remote attacker to obtain sensitive information via the externalId component.
How severe is CVE-2024-33453?: CVE-2024-33453 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2024-33453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-33453?: CVE-2024-33453 affects Espressif Esp-idf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-33453?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-33453 have an EU (EUVD) identifier?: Yes. CVE-2024-33453 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-31191.
When was CVE-2024-33453 published?: CVE-2024-33453 was published on 2024-10-17 and last updated on 2026-06-17.

References

https://github.com/Ant1sec-ops/CVE-2024-33453

Affected products (1)

cpe:2.3:a:espressif:esp-idf:5.1:-:*:*:*:*:*:*

More vulnerabilities in Espressif Esp-idf

CVE-2025-52471 — Critical (CVSS 9.8): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. An integer underflow vulnerability has been…
CVE-2026-45328 — Critical (CVSS 9.3): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, the esp_tee…
CVE-2025-66409 — Critical (CVSS 9.1): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and…
CVE-2025-55297 — High (CVSS 8.8): ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. The BluFi example bundled in ESP-IDF was…
CVE-2024-53406 — High (CVSS 8.8): Espressif Esp idf v5.3.0 is vulnerable to Insecure Permissions resulting in Authentication bypass. In the reconnection…
CVE-2021-28139 — High (CVSS 8.8): The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page…

All CVEs affecting Espressif Esp-idf →

Other CWE-120 (Classic Buffer Overflow) vulnerabilities

CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2026-24823 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in FASTSHIFT…
CVE-2026-24810 — Critical (CVSS 10.0): Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in rethinkdb (src/cjson modules).…
CVE-2026-24800 — Critical (CVSS 10.0): Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in tildearrow…
CVE-2025-9962 — Critical (CVSS 10.0): A buffer overflow vulnerability in Novakon P series allows attackers to gain root permission without prior…
CVE-2010-10016 — Critical (CVSS 10.0): BS.Player version 2.57 (build 1051) contains a vulnerability in its playlist import functionality. When processing .m3u…

Browse all CWE-120 (Classic Buffer Overflow) vulnerabilities →