SARA / Free Tools / KEV / CVE-2019-16928

CVE-2019-16928 on CISA KEV

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

CISA KEV — Actively Exploited

Exim Out-of-bounds Write Vulnerability

Vendor / Product
— / Exim / Exim Internet Mailer
Added to KEV
2022-03-03
BOD 22-01 due
2022-03-17
Ransomware use
Unknown
CVSS / EPSS
— — · EPSS 89.82%

01What CISA says about this vulnerability

Exim 4.92 through 4.92.2 allows remote code execution, a different vulnerability than CVE-2019-15846. There is a heap-based buffer overflow in string_vformat in string.c involving a long EHLO command.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
na / n/an/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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