CVE-2020-7457

Exp

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.

Published: 2020-07-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-7457 is rated High Exploit Risk (76.7/100): CVSS High severity, with high exploitation likelihood (EPSS 32.98%, 98th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2020-7457

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-7457

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 44.58% 32.98% -11.60%
2 2026-03-04 41.36% 44.58% +3.22%
3 2026-03-01 — 41.36% —

Full EPSS history (67 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-7457

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2020-7457

Affected software / configurations for CVE-2020-7457

Vendor Product Version Raw CPE
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:-:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p1:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p10:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p2:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p3:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p4:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p5:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p6:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p7:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p8:*:*:*:*:*:*
freebsd freebsd 11.3 cpe:2.3:o:freebsd:freebsd:11.3:p9:*:*:*:*:*:*
freebsd freebsd 11.4 cpe:2.3:o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
freebsd freebsd 11.4 cpe:2.3:o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*
freebsd freebsd 11.4 cpe:2.3:o:freebsd:freebsd:11.4:rc2:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:-:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p1:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p2:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p3:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p4:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p5:*:*:*:*:*:*
freebsd freebsd 12.1 cpe:2.3:o:freebsd:freebsd:12.1:p6:*:*:*:*:*:*

References for CVE-2020-7457

cvelogic Threat Intelligence