What is CVE-2020-28011?

CVE-2020-28011 is a high-severity vulnerability in Exim, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-05-06.

How severe is CVE-2020-28011?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-28011 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Exim

CVE-2020-28011

Exim 4 before 4.94.2 allows Heap-based Buffer Overflow in queue_run via two sender options: -R and -S. This may cause privilege escalation from exim to root.

Vulnerability class: Buffer Overflow

EPSS: 0.004 (32.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Exim
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

SashaPaladin/go-grpc-nmap-vulners

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-28011?: CVE-2020-28011 is a high-severity vulnerability in Exim, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-05-06.
How severe is CVE-2020-28011?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-28011 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.