How severe is CVE-2023-45318?

CVE-2023-45318 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-45318 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45318?

CVE-2023-45318 primarily affects Silabs Gecko Software Development Kit. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-45318?

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

Does CVE-2023-45318 have an EU (EUVD) identifier?

Yes. CVE-2023-45318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49612.

When was CVE-2023-45318 published?

CVE-2023-45318 was published on 2024-02-20 and last updated on 2026-06-17.

CVE-2023-45318

CVE-2023-45318 is a critical-severity vulnerability in Silabs Gecko Software Development Kit with a CVSS 3.x base score of 10.0. 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-787.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-49612
Weakness: CWE-787
Affected product: Silabs Gecko Software Development Kit
Published: 2024-02-20
Last modified: 2026-06-17

Description

A heap-based buffer overflow vulnerability exists in the HTTP Server functionality of Weston Embedded uC-HTTP git commit 80d4004. A specially crafted network packet can lead to arbitrary code execution. An attacker can send a malicious packet to trigger this vulnerability.

Frequently asked questions

What is CVE-2023-45318?: A heap-based buffer overflow vulnerability exists in the HTTP Server functionality of Weston Embedded uC-HTTP git commit 80d4004. A specially crafted network packet can lead to arbitrary code execution. An attacker can send a malicious packet to trigger this vulnerability.
How severe is CVE-2023-45318?: CVE-2023-45318 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-45318 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45318?: CVE-2023-45318 primarily affects Silabs Gecko Software Development Kit. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-45318?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2023-45318 have an EU (EUVD) identifier?: Yes. CVE-2023-45318 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-49612.
When was CVE-2023-45318 published?: CVE-2023-45318 was published on 2024-02-20 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:silabs:gecko_software_development_kit:4.3.2.0:*:*:*:*:*:*:*
cpe:2.3:a:weston-embedded:uc-http:-:*:*:*:*:*:*:*

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