CVE-2017-18212
CVE-2017-18212 is a critical-severity vulnerability in Jerryscript 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-125.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Jerryscript
- Published:
- Last modified:
Description
An issue was discovered in JerryScript 1.0. There is a heap-based buffer over-read in the lit_read_code_unit_from_hex function in lit/lit-char-helpers.c via a RegExp("[\x0"); payload.
Frequently asked questions
- What is CVE-2017-18212?
- An issue was discovered in JerryScript 1.0. There is a heap-based buffer over-read in the lit_read_code_unit_from_hex function in lit/lit-char-helpers.c via a RegExp("[\x0"); payload.
- How severe is CVE-2017-18212?
- CVE-2017-18212 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-2017-18212 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-18212?
- CVE-2017-18212 affects Jerryscript. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-18212?
- 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-2017-18212 published?
- CVE-2017-18212 was published on 2018-03-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jerryscript:jerryscript:1.0:*:*:*:*:*:*:*
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