How severe is CVE-2019-10777?

CVE-2019-10777 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-10777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-10777?

CVE-2019-10777 affects Amazon Aws Lambda. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-10777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-10777 published?

CVE-2019-10777 was published on 2020-01-08 and last updated on 2026-06-17.

CVE-2019-10777

CVE-2019-10777 is a critical-severity vulnerability in Amazon Aws Lambda with a CVSS 3.x base score of 9.8. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Amazon Aws Lambda
Published: 2020-01-08
Last modified: 2026-06-17

Description

In aws-lambda versions prior to version 1.0.5, the "config.FunctioName" is used to construct the argument used within the "exec" function without any sanitization. It is possible for a user to inject arbitrary commands to the "zipCmd" used within "config.FunctionName".

Frequently asked questions

What is CVE-2019-10777?: In aws-lambda versions prior to version 1.0.5, the "config.FunctioName" is used to construct the argument used within the "exec" function without any sanitization. It is possible for a user to inject arbitrary commands to the "zipCmd" used within "config.FunctionName".
How severe is CVE-2019-10777?: CVE-2019-10777 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-10777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-10777?: CVE-2019-10777 affects Amazon Aws Lambda. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-10777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-10777 published?: CVE-2019-10777 was published on 2020-01-08 and last updated on 2026-06-17.

References

https://snyk.io/vuln/SNYK-JS-AWSLAMBDA-540839

Affected products (1)

cpe:2.3:a:amazon:aws_lambda:*:*:*:*:*:*:*:*

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