CVE-2024-27459: openvpn Stack-based Buffer Overflow
CVSS: 7.8v3.1HighModified
Published 08-07-2024Last modified 23-08-2024
Vulnerability summary
CVE-2024-27459 is a high (CVSS 7.8) Stack-based Buffer Overflow vulnerability in openvpn. EPSS estimates a 8.26% chance of exploitation in the next 30 days, higher than 94.8% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
8.26%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-07-2024PublishedVulnerability first disclosed.
- 23-08-2024Last modifiedVulnerability information updated.
Description
The interactive service in OpenVPN 2.6.9 and earlier allows an attacker to send data causing a stack overflow which can be used to execute arbitrary code with more privileges.
CVSS metrics
2 scores · 2 sources · 1 versionHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSources2 sources · 7.2–7.8
- CVE.orgCNA7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
8.26%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
0.00 pp
From 8.26% on 20-09-2026
20-09-202620-10-2026
EPSS score8.26%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Openvpn2 products
- openvpn< 2.5.10 | ≥ 2.6.0, < 2.6.10
- openvpn_gui2.6.9 and earlier
1 vendor · 2 products
References
3 links- community.openvpn.net/openvpn/wiki/CVE-2024-27459Vendor Advisory