|Date: (C)2005-11-17 (M)2017-10-12|
|CVSS Score: 4.6||Access Vector: LOCAL|
|Exploitability Subscore: 3.9||Access Complexity: LOW|
|Impact Subscore: 6.4||Authentication: NONE|
| ||Confidentiality: PARTIAL|
| ||Integrity: PARTIAL|
| ||Availability: PARTIAL|
Off-by-one buffer overflow in pnmtopng before 2.39, when using the -alpha command line option (Alphas_Of_Color), allows attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted PNM file with exactly 256 colors.