Buffer overflow in Nanopb
CVE-2020-26243
Nanopb is a small code-size Protocol Buffers implementation. In Nanopb before versions 0.4.4 and 0.3.9.7, decoding specifically formed message can leak memory if dynamic allocation is enabled and an oneof field contains a static submessage…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.026 (83.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nanopb — versions < 0.3.9.7, >= 0.4.0, < 0.4.4
- Nanopb_project Nanopb
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2020-26243?
- CVE-2020-26243 is a high-severity vulnerability in Nanopb, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2020-11-25.
- How severe is CVE-2020-26243?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-26243 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.