HOMEVULNERABILITIESCVE-2020-23907
CRITICAL

CVE-2020-23907

CWE-787Published: April 21, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An issue was discovered in retdec v3.3. In function canSplitFunctionOn() of ir_modifications.cpp, there is a possible out of bounds read due to a heap buffer overflow. The impact is: Deny of Service, Memory Disclosure, and Possible Code Execution.

NVD Source

Technical Analysis

CVE-2020-23907 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

avast1 product(s)
retdec
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/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807
PATCHhttps://github.com/avast/retdec/issues/637
PATCHhttps://github.com/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807
PATCHhttps://github.com/avast/retdec/issues/637

All References (4)

→
https://github.com/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807Patch · Third Party Advisory
→
https://github.com/avast/retdec/issues/637Exploit · Patch · Third Party Advisory
→
https://github.com/avast/retdec/commit/517298bafaaff0a8e3dd60dd055a67c41b545807Patch · Third Party Advisory
→
https://github.com/avast/retdec/issues/637Exploit · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-23907
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedApr 21, 2021

Related CVEs (CWE-787)

CVE-2019-5049
10.0
CVE-2018-2913
10.0
CVE-2012-0751
10.0
CVE-2011-1807
10.0
CVE-2013-5610
10.0
CVE-2020-11897
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-23907 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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