CVE-2020-24383
CVE-2020-24383 is a critical-severity vulnerability in Butok Fnet with a CVSS 3.x base score of 9.1. 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: Critical (CVSS 3.x base score 9.1)
- CVSS v2: 6.4
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Butok Fnet
- Published:
- Last modified:
Description
An issue was discovered in FNET through 4.6.4. The code for processing resource records in mDNS queries doesn't check for proper '\0' termination of the resource record name string, leading to an out-of-bounds read, and potentially causing information leak or Denial-or-Service.
Frequently asked questions
- What is CVE-2020-24383?
- An issue was discovered in FNET through 4.6.4. The code for processing resource records in mDNS queries doesn't check for proper '\0' termination of the resource record name string, leading to an out-of-bounds read, and potentially causing information leak or Denial-or-Service.
- How severe is CVE-2020-24383?
- CVE-2020-24383 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
- Is CVE-2020-24383 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-24383?
- CVE-2020-24383 affects Butok Fnet. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-24383?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2020-24383 published?
- CVE-2020-24383 was published on 2020-12-11 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:butok:fnet:*:*:*:*:*:*:*:*
More vulnerabilities in Butok Fnet
- CVE-2020-27633 — Critical (CVSS 9.1): In FNET 4.6.3, TCP ISNs are improperly random.
- CVE-2020-17467 — Critical (CVSS 9.1): An issue was discovered in FNET through 4.6.4. The code for processing the hostname from an LLMNR request doesn't check…
- CVE-2020-17469 — High (CVSS 7.5): An issue was discovered in FNET through 4.6.4. The code for IPv6 fragment reassembly tries to access a previous…
- CVE-2020-17468 — High (CVSS 7.5): An issue was discovered in FNET through 4.6.4. The code for processing the hop-by-hop header (in the IPv6 extension…
- CVE-2020-17470 — Medium (CVSS 5.3): An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not…
All CVEs affecting Butok Fnet →
Other CWE-125 (Out-of-bounds Read) vulnerabilities
- CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
- CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
- CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
- CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
- CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…