How severe is CVE-2021-31680?

CVE-2021-31680 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-31680 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31680?

CVE-2021-31680 affects Ultralytics Yolov5. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31680?

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-2021-31680 published?

CVE-2021-31680 was published on 2023-07-31 and last updated on 2026-06-17.

CVE-2021-31680

CVE-2021-31680 is a high-severity vulnerability in Ultralytics Yolov5 with a CVSS 3.x base score of 7.8. 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ultralytics Yolov5
Published: 2023-07-31
Last modified: 2026-06-17

Description

Deserialization of Untrusted Data vulnerability in yolo 5 allows attackers to execute arbitrary code via crafted yaml file.

Frequently asked questions

What is CVE-2021-31680?: Deserialization of Untrusted Data vulnerability in yolo 5 allows attackers to execute arbitrary code via crafted yaml file.
How severe is CVE-2021-31680?: CVE-2021-31680 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-31680 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31680?: CVE-2021-31680 affects Ultralytics Yolov5. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31680?: 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-2021-31680 published?: CVE-2021-31680 was published on 2023-07-31 and last updated on 2026-06-17.

References

https://huntr.dev/bounties/1-other-yolov5/

Affected products (1)

cpe:2.3:a:ultralytics:yolov5:-:*:*:*:*:*:*:*

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