Skip to main content

CVE detail

CVE-2017-7521

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to remote denial-of-service due to memory exhaustion caused by memory leaks and double-free issue in extract_x509_extension().

CVSS 5.9 · MediumBuzz score 17.5

Buzz score

Why this CVE is surfacing

Buzz score total 17.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
6.5
2 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • OpenVPN fixed several vulnerabilities that could be exploited by remote attackers, the flaws were not detected in a recent audit. Recently two distinct audits were conducted to discover security issues in the OpenVPN, many flaws were found but some vulnerabilities were not spotted by the experts. Four of the vulnerabilities in OpenVPN 2.4.2, were found by […]

    newssecurityaffairs.comJun 23, 2017, 5:44 AM
  • OpenVPN this week patched several vulnerabilities impacting various branches, including flaws that could be exploited remotely.

    newswww.securityweek.comJun 22, 2017, 3:38 PM

Exploit code

Public exploit repository references

Public PoC repositories are third-party, potentially unsafe artifacts. Treat their code as untrusted and use it only on authorized systems in an isolated, least-privilege environment. cvebuzz does not execute the code or verify that an exploit works.

0 repository references · best confidence N/A · max 0 stars
No public PoC repositories have been matched yet.

Related records

Similar CVEs

6 related CVEs with shared weakness or product evidence
  • CVE-2026-73215

    Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.17.0, turnports_allocate_even() in src/apps/relay/turn_ports.c marks the unused odd sibling port as…

    CVSS 7.1 · High
    3 mentions
  • CVE-2026-49343

    Klever-Go is the Go implementation of the Klever blockchain protocol. In versions prior to 1.7.18, the account-data trie syncers are vulnerable to a resource-exhaustion flaw that…

    CVSS 5.9 · Medium
    2 mentions
  • CVE-2026-61387

    In Eclipse Milo versions 1.0.0 through 1.1.4, monitored-item quota accounting is not exception-safe: if item creation fails with an unchecked error, the server-global reservation…

    CVSS 6.9 · Medium
  • CVE-2026-36590

    An issue in EMQ NanoMQ v.0.24.9 allows a remote attacker to cause a denial of service via the nni_qos_db_set function in broker_tcp.c component

    CVSS 7.5 · High
    2 mentions
  • CVE-2026-54786

    Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0…

    CVSS 2.3 · Low
  • CVE-2026-48043

    Netty is a network application framework for development of protocol servers and clients. In netty-codec-http2 prior to versions 4.1.135.Final and 4.2.15.Final, the `DelegatingDec…

    CVSS 5.3 · Medium