How severe is CVE-2020-12358?

CVE-2020-12358 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-12358 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-2020-12358?

CVE-2020-12358 primarily affects Intel Bios. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12358?

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

When was CVE-2020-12358 published?

CVE-2020-12358 was published on 2021-06-09 and last updated on 2026-06-17.

CVE-2020-12358

CVE-2020-12358 is a medium-severity vulnerability in Intel Bios with a CVSS 3.x base score of 4.4. 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: Medium (CVSS 3.x base score 4.4)
CVSS v2: 2.1
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Intel Bios
Published: 2021-06-09
Last modified: 2026-06-17

Description

Out of bounds write in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable denial of service via local access.

Frequently asked questions

What is CVE-2020-12358?: Out of bounds write in the firmware for some Intel(R) Processors may allow a privileged user to potentially enable denial of service via local access.
How severe is CVE-2020-12358?: CVE-2020-12358 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-12358 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-2020-12358?: CVE-2020-12358 primarily affects Intel Bios. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12358?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12358 published?: CVE-2020-12358 was published on 2021-06-09 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:intel:bios:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_ipc547g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:aff_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:e-series_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:fas_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_compute_node_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_storage_node_bios:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:solidfire_bios:-:*:*:*:*:*:*:*

More vulnerabilities in Intel Bios

CVE-2019-14557 — High (CVSS 8.0): Buffer overflow in BIOS firmware for 8th, 9th, 10th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 &…
CVE-2020-12360 — High (CVSS 7.8): Out of bounds read in the firmware for some Intel(R) Processors may allow an authenticated user to potentially enable…
CVE-2020-8672 — High (CVSS 7.8): Out of bound read in BIOS firmware for 8th, 9th Generation Intel(R) Core(TM), Intel(R) Celeron(R) Processor 4000 Series…
CVE-2020-8739 — High (CVSS 7.8): Use of potentially dangerous function in Intel BIOS platform sample code for some Intel(R) Processors may allow an…
CVE-2018-3612 — High (CVSS 7.8): Intel NUC kits with insufficient input validation in system firmware, potentially allows a local attacker to elevate…
CVE-2008-7096 — Medium (CVSS 6.9): Intel Desktop and Intel Mobile Boards with BIOS firmware DQ35JO, DQ35MP, DP35DP, DG33FB, DG33BU, DG33TL, MGM965TW,…

All CVEs affecting Intel Bios →

Other CWE-787 (Out-of-bounds Write) vulnerabilities

CVE-2026-42369 — Critical (CVSS 10.0): GV-VMS V20 is a Video Monitoring Software used to gather the feeds of many surveillance cameras and manage other…
CVE-2026-4746 — Critical (CVSS 10.0): Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is…
CVE-2025-43300 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 15.8.5 and iPadOS…
CVE-2025-24201 — Critical (CVSS 10.0): An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in…
CVE-2024-42479 — Critical (CVSS 10.0): llama.cpp provides LLM inference in C/C++. The unsafe `data` pointer member in the `rpc_tensor` structure can cause…
CVE-2024-39791 — Critical (CVSS 10.0): Stack-based buffer overflow vulnerabilities affecting Vonets industrial wifi bridge relays and wifi bridge…

Browse all CWE-787 (Out-of-bounds Write) vulnerabilities →