How severe is CVE-2018-1000661?

CVE-2018-1000661 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-2018-1000661 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000661?

CVE-2018-1000661 affects Jsish. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000661?

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

When was CVE-2018-1000661 published?

CVE-2018-1000661 was published on 2018-09-06 and last updated on 2026-06-17.

CVE-2018-1000661

CVE-2018-1000661 is a medium-severity vulnerability in Jsish 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Jsish
Published: 2018-09-06
Last modified: 2026-06-17

Description

jsish version 2.4.67 contains a CWE-476: NULL Pointer Dereference vulnerability in Jsi_LogMsg (jsiUtils.c:196) that can result in Crash due to segmentation fault. This attack appear to be exploitable via the victim executing specially crafted javascript code. This vulnerability appears to have been fixed in 2.4.69.

Frequently asked questions

What is CVE-2018-1000661?: jsish version 2.4.67 contains a CWE-476: NULL Pointer Dereference vulnerability in Jsi_LogMsg (jsiUtils.c:196) that can result in Crash due to segmentation fault. This attack appear to be exploitable via the victim executing specially crafted javascript code. This vulnerability appears to have been fixed in 2.4.69.
How severe is CVE-2018-1000661?: CVE-2018-1000661 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-2018-1000661 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000661?: CVE-2018-1000661 affects Jsish. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000661?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000661 published?: CVE-2018-1000661 was published on 2018-09-06 and last updated on 2026-06-17.

References

https://jsish.org/fossil/jsi/tktview/2adeb066894695b38309d92771aea11c8e0a56a8

Affected products (1)

cpe:2.3:a:jsish:jsish:2.4.67:*:*:*:*:*:*:*

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