How severe is CVE-2021-46491?

CVE-2021-46491 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-2021-46491 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46491?

CVE-2021-46491 affects Jsish. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46491?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-46491 published?

CVE-2021-46491 was published on 2022-01-27 and last updated on 2026-06-17.

CVE-2021-46491

CVE-2021-46491 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.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Jsish
Published: 2022-01-27
Last modified: 2026-06-17

Description

Jsish v3.5.0 was discovered to contain a SEGV vulnerability via Jsi_CommandPkgOpts at src/jsiCmds.c. This vulnerability can lead to a Denial of Service (DoS).

Frequently asked questions

What is CVE-2021-46491?: Jsish v3.5.0 was discovered to contain a SEGV vulnerability via Jsi_CommandPkgOpts at src/jsiCmds.c. This vulnerability can lead to a Denial of Service (DoS).
How severe is CVE-2021-46491?: CVE-2021-46491 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-2021-46491 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46491?: CVE-2021-46491 affects Jsish. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46491?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-46491 published?: CVE-2021-46491 was published on 2022-01-27 and last updated on 2026-06-17.

References

https://github.com/pcmacdon/jsish/issues/69

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…

All CVEs affecting Jsish →