HOMEVULNERABILITIESCVE-2020-35198
CRITICAL

CVE-2020-35198

CWE-190Published: May 12, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An issue was discovered in Wind River VxWorks 7. The memory allocator has a possible integer overflow in calculating a memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.

NVD Source

Technical Analysis

CVE-2020-35198 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Oracle1 product(s)
communications eagle
windriver1 product(s)
vxworks
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html
PATCHhttps://www.oracle.com/security-alerts/cpuapr2022.html
ADVISORYhttps://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-35198
ADVISORYhttps://support2.windriver.com/index.php?page=security-notices
ADVISORYhttps://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-35198
ADVISORYhttps://support2.windriver.com/index.php?page=security-notices

All References (6)

→
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-35198Vendor Advisory
→
https://support2.windriver.com/index.php?page=security-noticesVendor Advisory
→
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch · Third Party Advisory
→
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-35198Vendor Advisory
→
https://support2.windriver.com/index.php?page=security-noticesVendor Advisory
→
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-35198
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedMay 12, 2021

Related CVEs (CWE-190)

CVE-2012-5143
10.0
CVE-2010-3254
10.0
CVE-2013-2555
10.0
CVE-2008-2663
10.0
CVE-2010-1233
10.0
CVE-2012-5835
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-35198 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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