CVE-2024-21909
CVE-2024-21909 is a high-severity vulnerability in Peteroupc Cbor with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-407.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (61st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2022-0486
- Weakness: CWE-407
- Affected product: Peteroupc Cbor
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2024-21909?
- 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.
- How severe is CVE-2024-21909?
- CVE-2024-21909 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2024-21909 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-21909?
- CVE-2024-21909 affects Peteroupc Cbor. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-21909?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2024-21909 have an EU (EUVD) identifier?
- Yes. CVE-2024-21909 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-0486.
- When was CVE-2024-21909 published?
- CVE-2024-21909 was published on 2024-01-03 and last updated on 2026-06-17.
References
- https://github.com/advisories/GHSA-6r92-cgxc-r5fg
- https://github.com/peteroupc/CBOR/commit/b4117dbbb4cd5a4a963f9d0c9aa132f033e15b95
- https://github.com/peteroupc/CBOR/compare/v4.5...v4.5.1
- https://github.com/peteroupc/CBOR/security/advisories/GHSA-6r92-cgxc-r5fg
- https://vulncheck.com/advisories/vc-advisory-GHSA-6r92-cgxc-r5fg
Affected products (1)
- cpe:2.3:a:peteroupc:cbor:*:*:*:*:*:.net:*:*
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