How severe is CVE-2023-32820?

CVE-2023-32820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-32820 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-32820?

CVE-2023-32820 primarily affects Mediatek Iot Yocto. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-32820?

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.

When was CVE-2023-32820 published?

CVE-2023-32820 was published on 2023-10-02 and last updated on 2026-06-17.

CVE-2023-32820

CVE-2023-32820 is a high-severity vulnerability in Mediatek Iot Yocto with a CVSS 3.x base score of 7.5. 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-617.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-617
Affected product: Mediatek Iot Yocto
Published: 2023-10-02
Last modified: 2026-06-17

Description

In wlan firmware, there is a possible firmware assertion due to improper input handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07932637; Issue ID: ALPS07932637.

Frequently asked questions

What is CVE-2023-32820?: In wlan firmware, there is a possible firmware assertion due to improper input handling. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07932637; Issue ID: ALPS07932637.
How severe is CVE-2023-32820?: CVE-2023-32820 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-32820 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-32820?: CVE-2023-32820 primarily affects Mediatek Iot Yocto. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-32820?: 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.
When was CVE-2023-32820 published?: CVE-2023-32820 was published on 2023-10-02 and last updated on 2026-06-17.

References

https://corp.mediatek.com/product-security-bulletin/October-2023

Affected products (7)

cpe:2.3:a:linuxfoundation:yocto:3.1:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:yocto:3.3:*:*:*:*:*:*:*
cpe:2.3:a:mediatek:iot_yocto:23.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:12.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:4.19:-:*:*:*:*:*:*

More vulnerabilities in Mediatek Iot Yocto

CVE-2024-20100 — Critical (CVSS 9.8): In wlan driver, there is a possible out of bounds write due to improper input validation. This could lead to remote…
CVE-2025-20721 — High (CVSS 7.8): In imgsensor, there is a possible out of bounds write due to a missing bounds check. This could lead to local…
CVE-2023-32829 — Medium (CVSS 6.7): In apusys, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of…
CVE-2023-32828 — Medium (CVSS 6.7): In vpu, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of…
CVE-2023-32811 — Medium (CVSS 6.7): In connectivity system driver, there is a possible out of bounds write due to improper input validation. This could…
CVE-2023-32806 — Medium (CVSS 6.7): In wlan driver, there is a possible out of bounds write due to improper input validation. This could lead to local…

All CVEs affecting Mediatek Iot Yocto →

Other CWE-617 (Reachable Assertion) vulnerabilities

CVE-2020-3615 — Critical (CVSS 9.8): Valid deauth/disassoc frames is dropped in case if RMF is enabled and some rouge peer keep on sending rogue…
CVE-2019-9795 — Critical (CVSS 9.8): A vulnerability where type-confusion in the IonMonkey just-in-time (JIT) compiler could potentially be used by…
CVE-2026-31739 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: crypto: tegra - Add missing CRYPTO_ALG_ASYNC The…
CVE-2020-12417 — High (CVSS 8.8): Due to confusion about ValueTags on JavaScript Objects, an object may pass through the type barrier, resulting in…
CVE-2020-6623 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__cff_get_index.
CVE-2020-6619 — High (CVSS 8.8): stb stb_truetype.h through 1.22 has an assertion failure in stbtt__buf_seek.

Browse all CWE-617 (Reachable Assertion) vulnerabilities →