CVE-2019-1010176: JerryScript commit 4e58ccf68070671e1fff5cd6673f0c1d5b80b166 is affected by: Buffer Overflow

Q: How do I fix CVE-2019-1010176?

jerryscript: upgrade to 2.0. Exact commands for each OS are on this page.

Q: Is CVE-2019-1010176 being exploited?

CVE-2019-1010176 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-1010176 affect?

CVE-2019-1010176 affects jerryscript. Severity is critical (CVSS 9.8). JerryScript commit 4e58ccf68070671e1fff5cd6673f0c1d5b80b166 is affected by: Buffer Overflow. The impact is: denial of service and possibly arbitrary code execution. The component is: function lit_char_to_utf8_bytes (jerry-core/lit/lit-char-

Q: How urgent is CVE-2019-1010176?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2019-1010176 is a critical-severity flaw (CVSS 9.8) affecting jerryscript. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

JerryScript commit 4e58ccf68070671e1fff5cd6673f0c1d5b80b166 is affected by: Buffer Overflow. The impact is: denial of service and possibly arbitrary code execution. The component is: function lit_char_to_utf8_bytes (jerry-core/lit/lit-char-helpers.c:377). The attack vector is: executing crafted javascript code. The fixed version is: after commit 505dace719aebb3308a3af223cfaa985159efae0.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-787
Published	2019-07-25
Last modified	2026-06-17

Publisher (CNA): DWF · Vendor: jerryscript

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-07-25 14:15 UTCPublished CVE record published
2026-06-17 02:09 UTCUpdated Record last modified

jerryscript jerryscript UPGRADE

Affected: < 2.0

Fixed in: 2.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy jerryscript || rpm -q jerryscript || jerryscript --version

2. UPGRADE to 2.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade jerryscript

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jerryscript

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-1010176?

jerryscript: upgrade to 2.0. Exact commands for each OS are on this page.

Is CVE-2019-1010176 being exploited?

CVE-2019-1010176 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-1010176 affect?

CVE-2019-1010176 affects jerryscript. Severity is critical (CVSS 9.8). JerryScript commit 4e58ccf68070671e1fff5cd6673f0c1d5b80b166 is affected by: Buffer Overflow. The impact is: denial of service and possibly arbitrary code execution. The component is: function lit_char_to_utf8_bytes (jerry-core/lit/lit-char-

How urgent is CVE-2019-1010176?

Priority 66/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

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References

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