HOMEVULNERABILITIESCVE-2020-28371
CRITICAL

CVE-2020-28371

CWE-190Published: November 9, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An issue was discovered in ReadyTalk Avian 1.2.0 before 2020-10-27. The FileOutputStream.write() method in FileOutputStream.java has a boundary check to prevent out-of-bounds memory read/write operations. However, an integer overflow leads to bypassing this check and achieving the out-of-bounds access. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

NVD Source

Technical Analysis

CVE-2020-28371 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

readytalk1 product(s)
avian
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

PATCHhttps://github.com/ReadyTalk/avian/commit/0871979b298add320ca63f65060acb7532c8a0dd
PATCHhttps://github.com/ReadyTalk/avian/pull/572
PATCHhttps://github.com/ReadyTalk/avian/commit/0871979b298add320ca63f65060acb7532c8a0dd
PATCHhttps://github.com/ReadyTalk/avian/pull/572

All References (4)

→
https://github.com/ReadyTalk/avian/commit/0871979b298add320ca63f65060acb7532c8a0ddPatch · Third Party Advisory
→
https://github.com/ReadyTalk/avian/pull/572Patch · Third Party Advisory
→
https://github.com/ReadyTalk/avian/commit/0871979b298add320ca63f65060acb7532c8a0ddPatch · Third Party Advisory
→
https://github.com/ReadyTalk/avian/pull/572Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-28371
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected1 vendor(s)
PublishedNov 9, 2020

Related CVEs (CWE-190)

CVE-2025-64721
10.0
CVE-2026-24814
10.0
CVE-2010-3254
10.0
CVE-2010-1233
10.0
CVE-2013-2555
10.0
CVE-2015-5097
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-28371 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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