HOMEVULNERABILITIESCVE-2021-27417
CRITICAL

CVE-2021-27417

CWE-190Published: May 3, 2022· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

eCosCentric eCosPro RTOS Versions 2.0.1 through 4.5.3 are vulnerable to integer wraparound in function calloc (an implementation of malloc). The unverified memory assignment can lead to arbitrary memory allocation, resulting in a heap-based buffer overflow.

NVD Source

Technical Analysis

CVE-2021-27417 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

ecoscentric1 product(s)
ecospro
Source: NVD CPE · 1 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

ADVISORYhttps://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
ADVISORYhttps://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437
ADVISORYhttps://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04

All References (4)

→
https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437Permissions Required · Vendor Advisory
→
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory · US Government Resource
→
https://bugzilla.ecoscentric.com/show_bug.cgi?id=1002437Permissions Required · Vendor Advisory
→
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2021-27417
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected1 vendor(s)
PublishedMay 3, 2022

Related CVEs (CWE-190)

CVE-2010-1233
10.0
CVE-2012-5835
10.0
CVE-2025-64721
10.0
CVE-2008-2663
10.0
CVE-2010-3254
10.0
CVE-2012-5143
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-27417 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. CVE data is provided under the NVD usage policy.
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