What is CVE-2020-28010?

CVE-2020-28010 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-2020-28010?

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

Is CVE-2020-28010 known to be exploited?

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

Buffer overflow in Exim

CVE-2020-28010

Exim 4 before 4.94.2 allows Out-of-bounds Write because the main function, while setuid root, copies the current working directory pathname into a buffer that is too small (on some common platforms).

Vulnerability class: Buffer Overflow

EPSS: 0.004 (33.9th 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

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2020-28010?: CVE-2020-28010 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-2020-28010?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-28010 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.