HOMEVULNERABILITIESCVE-2024-21909
HIGH

CVE-2024-21909

CWE-407Published: January 3, 2024· Updated: Jul 14, 2026

7.5
CVSS v3.1

Official Description

PeterO.Cbor versions 4.0.0 through 4.5.0 are vulnerable to a denial of

service vulnerability. An attacker may trigger the denial of service

condition by providing crafted data to the DecodeFromBytes or other

decoding mechanisms in PeterO.Cbor. Depending on the usage of the

library, an unauthenticated and remote attacker may be able to cause the

denial of service condition.

NVD Source

Technical Analysis

CVE-2024-21909 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 availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

peteroupc1 product(s)
cbor
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/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95
PATCHhttps://github.com/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95
ADVISORYhttps://github.com/advisories/GHSA-6r92-cgxc-r5fg
ADVISORYhttps://github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fg
ADVISORYhttps://vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fg
ADVISORYhttps://github.com/advisories/GHSA-6r92-cgxc-r5fg
ADVISORYhttps://github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fg
ADVISORYhttps://vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fg

All References (10)

→
https://github.com/advisories/GHSA-6r92-cgxc-r5fgThird Party Advisory
→
https://github.com/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95Patch
→
https://github.com/peteroupc/CBOR/compare/v4.5...v4.5.1Release Notes
→
https://github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fgThird Party Advisory
→
https://vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fgThird Party Advisory
→
https://github.com/advisories/GHSA-6r92-cgxc-r5fgThird Party Advisory
→
https://github.com/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95Patch
→
https://github.com/peteroupc/CBOR/compare/v4.5...v4.5.1Release Notes
→
https://github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fgThird Party Advisory
→
https://vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fgThird Party Advisory

Quick Facts

CVE IDCVE-2024-21909
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-407
CISA KEVNo
Affected1 vendor(s)
PublishedJan 3, 2024

Related CVEs (CWE-407)

CVE-2026-54892
8.7
CVE-2026-58226
8.7
CVE-2026-55206
8.7
CVE-2026-57480
8.7
CVE-2026-43967
8.7
CVE-2026-31934
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-21909 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.
← All Vulnerabilities·Search for CVE-2024-21909·NVD