How severe is CVE-2020-13844?

CVE-2020-13844 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-13844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13844?

CVE-2020-13844 primarily affects Arm Cortex-a32 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-13844?

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

When was CVE-2020-13844 published?

CVE-2020-13844 was published on 2020-06-08 and last updated on 2026-06-17.

CVE-2020-13844

CVE-2020-13844 is a medium-severity vulnerability in Arm Cortex-a32 Firmware with a CVSS 3.x base score of 5.5. 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-203.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Arm Cortex-a32 Firmware
Published: 2020-06-08
Last modified: 2026-06-17

Description

Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation."

Frequently asked questions

What is CVE-2020-13844?: Arm Armv8-A core implementations utilizing speculative execution past unconditional changes in control flow may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis, aka "straight-line speculation."
How severe is CVE-2020-13844?: CVE-2020-13844 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-13844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13844?: CVE-2020-13844 primarily affects Arm Cortex-a32 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-13844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13844 published?: CVE-2020-13844 was published on 2020-06-08 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:arm:cortex-a32_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a35_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a53_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a57_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a72_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a73_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:arm:cortex-a34_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

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