CVE-2021-26194
CVE-2021-26194 is a medium-severity vulnerability in Jerryscript 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. The underlying weakness is classified as CWE-416.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (57th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Jerryscript
- Published:
- Last modified:
Description
An issue was discovered in JerryScript 2.4.0. There is a heap-use-after-free in ecma_is_lexical_environment in the ecma-helpers.c file.
Frequently asked questions
- What is CVE-2021-26194?
- An issue was discovered in JerryScript 2.4.0. There is a heap-use-after-free in ecma_is_lexical_environment in the ecma-helpers.c file.
- How severe is CVE-2021-26194?
- CVE-2021-26194 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-26194 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26194?
- CVE-2021-26194 affects Jerryscript. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-26194?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-26194 published?
- CVE-2021-26194 was published on 2021-06-10 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jerryscript:jerryscript:2.4.0:*:*:*:*:*:*:*
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