SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2017-16844

Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded…

CRITICAL 9.8EPSS 12.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 12.2%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

Heap-based buffer overflow in the loadbuf function in formisc.c in formail in procmail 3.22 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted e-mail message because of a hardcoded realloc size, a different vulnerability than CVE-2014-3618.

CVSS 3.0
9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
12.20% probability · 96th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-119
Affected
procmail/procmail
Source
cve@mitre.org
EPSS trend
0%8%15%21 September 2026: 10.16%22 September 2026: 12.52%27 October 2026: 12.20%21 September 202627 October 2026

EPSS moved from 10.2% on 21 September 2026 to 12.2% on 27 October 2026, peaking at 12.5% on 22 September 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.