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CVE-2020-15890

27
FAUCET Score

CVE-2020-15890 describes an out-of-bounds read vulnerability in LuaJit versions up to 2.1.0-beta3, stemming from mishandled __gc handler frame traversal. This flaw primarily impacts various distributions of LuaJit on Canonical and Debian Linux systems. With a CVSS score of 7.5 (High), this vulnerability is remotely exploitable with low attack complexity, potentially leading to a denial of service. There is currently no evidence of active exploitation, nor are public exploit tools like Metasploit or Nuclei available, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.5CPE matchmatch criteria
cpe:2.3:a:luajit:luajit:*:*:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:luajit:luajit:2.1.0:beta1:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:luajit:luajit:2.1.0:beta2:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:a:luajit:luajit:2.1.0:beta3:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.86%
Probability of exploitation in next 30 days
EPSS Percentile
85.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0286 is in the 74th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt:8.2-8020120200707202843.11e3e113
View patch
redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt-devel:8.2-8020120200707202843.11e3e113
View patch
redhatend of lifevia redhat_api
Product: OpenShift Service Mesh 1Fixed in: servicemesh-proxy

Vendor Advisories (1)

redhatCVE-2020-15890Moderate

luajit: out-of-bounds read because __gc handler frame traversal is mishandled

Jul 11, 2020

References

lists.debian.org / debian-lts-announce/2025/08/msg00022.html
github.com / LuaJIT/LuaJIT/issues/601
ExploitThird Party Advisory
lists.debian.org / debian-lts-announce/2020/07/msg00026.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 4501-1
Third Party Advisory