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CVE-2019-11922

26
FAUCET Score

CVE-2019-11922 is a race condition vulnerability affecting Zstandard versions prior to 1.3.8, allowing out-of-bounds writes if an undersized output buffer is used during one-pass compression. Rated 8.1 HIGH, this vulnerability has a network attack vector, high attack complexity, and can lead to high impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.8CPE match
cpe:2.3:a:facebook:zstandard:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 29th percentile among its peer group of 8,915 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 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 (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2019-11922Moderate

zstd: race condition in one-pass compression functions that could allow out of bounds write

Sep 2, 2022

References

lists.opensuse.org / opensuse-security-announce/2019-08/msg00008.html
lists.opensuse.org / opensuse-security-announce/2019-08/msg00062.html
lists.opensuse.org / opensuse-security-announce/2019-08/msg00078.html
github.com / facebook/zstd/pull/1404/commits/3e5cdf1b6a85843e991d7d10f6a2567c15580da0
PatchThird Party Advisory
usn.ubuntu.com / 4108-1
facebook.com / security/advisories/cve-2019-11922
Vendor Advisory
oracle.com / security-alerts/cpuoct2020.html