CVE-2020-7457
CVE-2020-7457 is a high-severity vulnerability in Freebsd with a CVSS 3.x base score of 8.1. Its EPSS exploit-prediction score of 33% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-362.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- CVSS v2: 6.8
- EPSS exploit prediction: 33% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-362
- Affected product: Freebsd
- Published:
- Last modified:
Description
In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.
Frequently asked questions
- What is CVE-2020-7457?
- In FreeBSD 12.1-STABLE before r359565, 12.1-RELEASE before p7, 11.4-STABLE before r362975, 11.4-RELEASE before p1, and 11.3-RELEASE before p11, missing synchronization in the IPV6_2292PKTOPTIONS socket option set handler contained a race condition allowing a malicious application to modify memory after being freed, possibly resulting in code execution.
- How severe is CVE-2020-7457?
- CVE-2020-7457 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-7457 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 33% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-7457?
- CVE-2020-7457 primarily affects Freebsd. In total, 21 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-7457?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-7457 published?
- CVE-2020-7457 was published on 2020-07-09 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/158695/FreeBSD-ip6_setpktopt-Use-After-Free-Privilege-Escalation.html
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:20.ipv6.asc
- https://security.netapp.com/advisory/ntap-20200724-0002/
Affected products (21)
- cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:*
- cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:*
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- CVE-2010-1228 — Critical (CVSS 10.0): Multiple race conditions in the sandbox infrastructure in Google Chrome before 4.1.249.1036 have unspecified impact and…
- CVE-2008-6598 — Critical (CVSS 10.0): Multiple race conditions in WANPIPE before 3.3.6 have unknown impact and attack vectors related to "bri restart logic."
- CVE-2026-46137 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: ADD_ADDR rtx: fix potential…