HOMEVULNERABILITIESCVE-2020-14315
CRITICAL

CVE-2020-14315

CWE-787Published: September 16, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

A memory corruption vulnerability is present in bspatch as shipped in Colin Percival’s bsdiff tools version 4.3. Insufficient checks when handling external inputs allows an attacker to bypass the sanity checks in place and write out of a dynamically allocated buffer boundaries.

NVD Source

Technical Analysis

CVE-2020-14315 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

daemonology1 product(s)
bsdiff
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.redhat.com/show_bug.cgi?id=1856747
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/07/09/2
ADVISORYhttps://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/
ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=1856747
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/07/09/2
ADVISORYhttps://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/

All References (6)

→
https://bugzilla.redhat.com/show_bug.cgi?id=1856747Issue Tracking · Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2020/07/09/2Mailing List · Third Party Advisory
→
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/Exploit · Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1856747Issue Tracking · Third Party Advisory
→
https://www.openwall.com/lists/oss-security/2020/07/09/2Mailing List · Third Party Advisory
→
https://www.x41-dsec.de/lab/advisories/x41-2020-006-bspatch/Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2020-14315
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-787
CISA KEVNo
Affected1 vendor(s)
PublishedSep 16, 2020

Related CVEs (CWE-787)

CVE-2026-42369
10.0
CVE-2016-9343
10.0
CVE-2015-0235
10.0
CVE-2004-0574
10.0
CVE-2011-1807
10.0
CVE-2018-6692
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-14315 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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