CVE-2026-73639 Imager::File::PNG - Buffer Overflow

Imager::File::PNG < 1.004 for Perl contains a buffer overflow caused by incorrect row buffer sizing when reading PNGs with tRNS transparency chunk in read_direct8, letting attackers cause heap corruption and crash the process, exploit requires crafted PNG input.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.70% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Update to version 1.004 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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