7.5

CVE-2020-7469: freebsd Use After Free

CVSS: 7.5v3.1HighModified
Published 04-06-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-7469 is a high (CVSS 7.5) Use After Free vulnerability in freebsd. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.22%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 04-06-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.22%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.22% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdEOL11.4 | 11.4:beta1 | 11.4:p1 | 11.4:p2 | 11.4:p3 | 11.4:p4 | 11.4:rc1 | 11.4:rc2 | 12.1 | 12.1:p10 | 12.1:p2 | 12.1:p3 | 12.1:p4 | 12.1:p5 | 12.1:p6 | 12.1:p7 | 12.1:p8 | 12.1:p9 | 12.2
Netapp1 product

2 vendors · 2 products

References

2 links