How severe is CVE-2019-13991?

CVE-2019-13991 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-13991 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13991?

CVE-2019-13991 affects Arduino Arduino Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13991?

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

When was CVE-2019-13991 published?

CVE-2019-13991 was published on 2019-07-19 and last updated on 2026-06-17.

CVE-2019-13991

CVE-2019-13991 is a medium-severity vulnerability in Arduino Arduino Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Arduino Arduino Firmware
Published: 2019-07-19
Last modified: 2026-06-17

Description

Embedded systems based on Arduino before Rev3 allow remote attackers to send data to LEDs (directly connected to GPIO pins) via a laser, because of LED photosensitivity.

Frequently asked questions

What is CVE-2019-13991?: Embedded systems based on Arduino before Rev3 allow remote attackers to send data to LEDs (directly connected to GPIO pins) via a laser, because of LED photosensitivity.
How severe is CVE-2019-13991?: CVE-2019-13991 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-13991 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13991?: CVE-2019-13991 affects Arduino Arduino Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13991?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13991 published?: CVE-2019-13991 was published on 2019-07-19 and last updated on 2026-06-17.

References

https://arxiv.org/abs/1907.00479

Affected products (1)

cpe:2.3:o:arduino:arduino_firmware:*:*:*:*:*:*:*:*