Home/CVE/A vulnerability was found in zstd v1.4.10, where an attacker can supply empty string as an argument to the command line
CVE
CVE-2022-4899
A vulnerability was found in zstd v1.4.10, where an attacker can supply empty string as an argument to the command line
A vulnerability was found in zstd v1.4.10, where an attacker can supply empty string as an argument to the command line tool to cause buffer overrun.
HIGH · CVSS 7.5
EPSS 0.00255
Act now
- Public exploit or PoC is available
- SSVC automatable: yes - attacks can be scripted at scale
- CVSS base score ≥ 7.0
Sigma rules0
YARA rules0
Look this up elsewhere - one-click external pivots
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How to read a CVE - triage first, then detect and patch
This page is every public fact about CVE-2022-4899, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.
Triage: should I act now? Four signals, and they are not interchangeable:
CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked.
EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal.
CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score.
Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.
How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.
Then what - two workflows:
Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits.
PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.
Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).
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ATT&CK techniques
1Techniques this CVE enables - linked via CWECAPECATT&CK. High◆ = named directly in ATT&CK or Nuclei templates.
▤ Build a SIEM detection for these techniques▤
CAPEC attack patterns
3Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.
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Weakness Classification
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Affected Products & Versions
1facebook zstandardall versions
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Affected Packages
3Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI
zstd
HIGH
fixed in 1.5.4.0
SwiftURL
github.com/facebook/zstd
HIGH
fixed in 1.5.4
Ubuntu:22.04:LTS
libzstd
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Public Exploits & PoCs
12These PoC and exploit links come from public sources and are not verified to be safe or functional. Review the code before running anything, and treat unverified entries as untrusted.
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Fixed versions by distribution
33The package version that resolves this CVE on each Linux distribution, from the vendor’s published security data. fixed in shows a patched version exists; open means the package is listed as affected with no fix yet.
oracle allmecab open
oracle allmecab-devel fixed in 0:0.996-2.module+el8.9.0+90153+70413b10
oracle allmecab-ipadic open
oracle allmecab-ipadic-EUCJP fixed in 0:2.7.0.20070801-16.0.1.module+el8.9.0+90153+70413b10
oracle allmysql open
oracle allmysql-common open
oracle allmysql-devel open
oracle allmysql-errmsg open
oracle allmysql-libs open
oracle allmysql-server open
oracle allmysql-test fixed in 0:8.0.36-1.el9_3
rhel 8mecab fixed in 0:0.996-2.module+el8.9.0+21207+6c20cb3d
rhel 8mecab-devel fixed in 0:0.996-2.module+el8.9.0+21207+6c20cb3d
rhel 8mecab-ipadic fixed in 0:2.7.0.20070801-16.module+el8.9.0+21207+6c20cb3d
rhel 8mecab-ipadic-EUCJP open
rhel 8mysql open
rhel 8mysql-common open
rhel 8mysql-devel open
rhel 8mysql-errmsg open
rhel 8mysql-libs open
rhel 8mysql-server fixed in 0:8.0.36-1.module+el8.9.0+21207+6c20cb3d
rhel 8mysql-test fixed in 0:8.0.36-1.module+el8.9.0+21207+6c20cb3d
rhel 9mysql fixed in 0:8.0.36-1.el9_3
rhel 9mysql-common fixed in 0:8.0.36-1.el9_3
rhel 9mysql-devel fixed in 0:8.0.36-1.el9_3
rhel 9mysql-errmsg open
rhel 9mysql-libs fixed in 0:8.0.36-1.el9_3
rhel 9mysql-server open
rhel 9mysql-test open
suse sle15libzstd-devel fixed in 0:1.5.5-150600.1.3
suse sle15libzstd1 fixed in 0:1.4.4-150000.1.9.1
suse sle15libzstd1-32bit fixed in 0:1.5.7-150700.1.2
suse sle15zstd fixed in 0:1.5.0-150400.3.3.1
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Scoring & Timeline
7.5
HIGH · CVSS v3.1 · [email protected]
Attack Vector
Network
Adjacent
Local
Physical
Attack Complexity
Low
High
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories
9suse-csafopenSUSE-SU-2024:13613-1
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References & Sources
5Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.