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CVE-2019-1010177

28
FAUCET Score

CVE-2019-1010177 describes a critical Use-After-Free vulnerability in Jsish versions 2.4.70 and 2.047, specifically within the Jsi_RegExpNew function. This flaw can be triggered by executing crafted JavaScript code, leading to denial of service and potentially arbitrary code execution. With a CVSS score of 9.8 (Critical), it presents a significant risk due to its network-based attack vector and low attack complexity. While there is no evidence of active exploitation, public exploit code, or significant community discussion, the vulnerability has been patched in versions after commit 48a66c798d.

Impacted Technologies

VendorProductVersion(s)CPE
2.4.70_2.047CPE matchmatch criteria
cpe:2.3:a:jsish:jsish:2.4.70_2.047:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.15%
Probability of exploitation in next 30 days
EPSS Percentile
80.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0215 is in the 69th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jsish.org / fossil/jsi/tktview
ExploitVendor Advisory