CVE-2023-35862
CVE-2023-35862 is a medium-severity vulnerability in Libcoap with a CVSS 3.x base score of 6.5. 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-125.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 1% (51st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Libcoap
- Published:
- Last modified:
Description
libcoap 4.3.1 contains a buffer over-read via the function coap_parse_oscore_conf_mem at coap_oscore.c.
Frequently asked questions
- What is CVE-2023-35862?
- libcoap 4.3.1 contains a buffer over-read via the function coap_parse_oscore_conf_mem at coap_oscore.c.
- How severe is CVE-2023-35862?
- CVE-2023-35862 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-35862 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-35862?
- CVE-2023-35862 affects Libcoap. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-35862?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-35862 published?
- CVE-2023-35862 was published on 2023-06-19 and last updated on 2026-06-17.
References
- https://github.com/obgm/libcoap/issues/1117
- https://github.com/obgm/libcoap/pull/1118
- https://github.com/obgm/libcoap/tags
Affected products (1)
- cpe:2.3:a:libcoap:libcoap:4.3.1:*:*:*:*:*:*:*
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