CVE-2021-46499
CVE-2021-46499 is a medium-severity vulnerability in Jsish with a CVSS 3.x base score of 5.5. 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 5.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (46th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-416
- Affected product: Jsish
- Published:
- Last modified:
Description
Jsish v3.5.0 was discovered to contain a heap-use-after-free via jsi_ValueCopyMove in src/jsiValue.c. This vulnerability can lead to a Denial of Service (DoS).
Frequently asked questions
- What is CVE-2021-46499?
- Jsish v3.5.0 was discovered to contain a heap-use-after-free via jsi_ValueCopyMove in src/jsiValue.c. This vulnerability can lead to a Denial of Service (DoS).
- How severe is CVE-2021-46499?
- CVE-2021-46499 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-46499 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-46499?
- CVE-2021-46499 affects Jsish. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-46499?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-46499 published?
- CVE-2021-46499 was published on 2022-01-27 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jsish:jsish:3.5.0:*:*:*:*:*:*:*
More vulnerabilities in Jsish
- CVE-2025-65570 — Critical (CVSS 9.8): A type confusion in jsish 2.0 allows incorrect control flow during execution of the OP_NEXT opcode. When an…
- CVE-2024-24189 — Critical (CVSS 9.8): Jsish v3.5.0 (commit 42c694c) was discovered to contain a use-after-free via the SplitChar at ./src/jsiUtils.c.
- CVE-2024-24188 — Critical (CVSS 9.8): Jsish v3.5.0 was discovered to contain a heap-buffer-overflow in ./src/jsiUtils.c.
- CVE-2024-24186 — Critical (CVSS 9.8): Jsish v3.5.0 (commit 42c694c) was discovered to contain a stack-overflow via the component IterGetKeysCallback at…
- CVE-2020-22875 — Critical (CVSS 9.8): Integer overflow vulnerability in function Jsi_ObjSetLength in jsish before 3.0.6, allows remote attackers to execute…
- CVE-2020-22874 — Critical (CVSS 9.8): Integer overflow vulnerability in function Jsi_ObjArraySizer in jsish before 3.0.8, allows remote attackers to execute…
Other CWE-416 (Use After Free) vulnerabilities
- CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
- CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
- CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…