How severe is CVE-2020-13649?

CVE-2020-13649 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-13649 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13649?

CVE-2020-13649 affects Jerryscript. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13649?

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-2020-13649 published?

CVE-2020-13649 was published on 2020-05-28 and last updated on 2026-06-17.

CVE-2020-13649

CVE-2020-13649 is a high-severity vulnerability in Jerryscript with a CVSS 3.x base score of 7.5. 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Jerryscript
Published: 2020-05-28
Last modified: 2026-06-17

Description

parser/js/js-scanner.c in JerryScript 2.2.0 mishandles errors during certain out-of-memory conditions, as demonstrated by a scanner_reverse_info_list NULL pointer dereference and a scanner_scan_all assertion failure.

Frequently asked questions

What is CVE-2020-13649?: parser/js/js-scanner.c in JerryScript 2.2.0 mishandles errors during certain out-of-memory conditions, as demonstrated by a scanner_reverse_info_list NULL pointer dereference and a scanner_scan_all assertion failure.
How severe is CVE-2020-13649?: CVE-2020-13649 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-13649 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13649?: CVE-2020-13649 affects Jerryscript. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13649?: 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-2020-13649 published?: CVE-2020-13649 was published on 2020-05-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:jerryscript:jerryscript:2.2.0:*:*:*:*:*:*:*

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