How severe is CVE-2025-58340?

CVE-2025-58340 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-58340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-58340?

CVE-2025-58340 primarily affects Samsung Exynos 980 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-58340?

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

Does CVE-2025-58340 have an EU (EUVD) identifier?

Yes. CVE-2025-58340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206691.

When was CVE-2025-58340 published?

CVE-2025-58340 was published on 2026-02-03 and last updated on 2026-06-17.

CVE-2025-58340

CVE-2025-58340 is a medium-severity vulnerability in Samsung Exynos 980 Firmware with a CVSS 3.x base score of 6.2. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 6.2)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206691
Weakness: CWE-770
Affected product: Samsung Exynos 980 Firmware
Published: 2026-02-03
Last modified: 2026-06-17

Description

An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1080, 1280, 1330, 1380, 1480, 1580, W920, W930 and W1000. There is unbounded memory allocation via a large buffer in a /proc/driver/unifi0/send_delts write operation, leading to kernel memory exhaustion.

Frequently asked questions

What is CVE-2025-58340?: An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1080, 1280, 1330, 1380, 1480, 1580, W920, W930 and W1000. There is unbounded memory allocation via a large buffer in a /proc/driver/unifi0/send_delts write operation, leading to kernel memory exhaustion.
How severe is CVE-2025-58340?: CVE-2025-58340 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-58340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-58340?: CVE-2025-58340 primarily affects Samsung Exynos 980 Firmware. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-58340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-58340 have an EU (EUVD) identifier?: Yes. CVE-2025-58340 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206691.
When was CVE-2025-58340 published?: CVE-2025-58340 was published on 2026-02-03 and last updated on 2026-06-17.

References

Affected products (11)

cpe:2.3:o:samsung:exynos_980_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_850_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1080_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1280_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1330_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1380_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1480_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_1580_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_w920_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_w930_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:samsung:exynos_w1000_firmware:-:*:*:*:*:*:*:*

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CVE-2025-54328 — Critical (CVSS 10.0): An issue was discovered in SMS in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080,…
CVE-2025-52908 — Critical (CVSS 9.8): An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1280,…
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CVE-2025-52909 — Critical (CVSS 9.8): An issue was discovered in the Wi-Fi driver in Samsung Mobile Processor and Wearable Processor Exynos 980, 850, 1280,…
CVE-2025-58349 — Critical (CVSS 9.1): An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080,…
CVE-2025-27807 — Critical (CVSS 9.1): An issue was discovered in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2100,…

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