Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 7 products from redhat, from redhat, from redhat and 4 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2016-04-14T14:59:03.287
2025-04-12T10:46:40.837
Deferred
CVSSv3.0: 8.8 (HIGH)
AV:N/AC:M/Au:N/C:C/I:C/A:C
8.6
10.0
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | redhat | enterprise_linux_desktop_supplementary | 5.0 | Yes |
| Operating System | redhat | enterprise_linux_desktop_supplementary | 6.0 | Yes |
| Operating System | redhat | enterprise_linux_hpc_node | 6.0 | Yes |
| Operating System | redhat | enterprise_linux_server_supplementary | 5.0 | Yes |
| Operating System | redhat | enterprise_linux_server_supplementary | 6.0 | Yes |
| Operating System | redhat | enterprise_linux_workstation_supplementary | 6.0 | Yes |
| Application | libpng | libpng | 1.2.0 | Yes |
| Application | libpng | libpng | 1.2.1 | Yes |
| Application | libpng | libpng | 1.2.2 | Yes |
| Application | libpng | libpng | 1.2.3 | Yes |
| Application | libpng | libpng | 1.2.4 | Yes |
| Application | libpng | libpng | 1.2.5 | Yes |
| Application | libpng | libpng | 1.2.6 | Yes |
| Application | libpng | libpng | 1.2.7 | Yes |
| Application | libpng | libpng | 1.2.8 | Yes |
| Application | libpng | libpng | 1.2.9 | Yes |
| Application | libpng | libpng | 1.2.10 | Yes |
| Application | libpng | libpng | 1.2.11 | Yes |
| Application | libpng | libpng | 1.2.12 | Yes |
| Application | libpng | libpng | 1.2.13 | Yes |
| Application | libpng | libpng | 1.2.14 | Yes |
| Application | libpng | libpng | 1.2.15 | Yes |
| Application | libpng | libpng | 1.2.16 | Yes |
| Application | libpng | libpng | 1.2.17 | Yes |
| Application | libpng | libpng | 1.2.18 | Yes |
| Application | libpng | libpng | 1.2.19 | Yes |
| Application | libpng | libpng | 1.2.20 | Yes |
| Application | libpng | libpng | 1.2.21 | Yes |
| Application | libpng | libpng | 1.2.22 | Yes |
| Application | libpng | libpng | 1.2.23 | Yes |
| Application | libpng | libpng | 1.2.24 | Yes |
| Application | libpng | libpng | 1.2.25 | Yes |
| Application | libpng | libpng | 1.2.26 | Yes |
| Application | libpng | libpng | 1.2.27 | Yes |
| Application | libpng | libpng | 1.2.28 | Yes |
| Application | libpng | libpng | 1.2.29 | Yes |
| Application | libpng | libpng | 1.2.30 | Yes |
| Application | libpng | libpng | 1.2.31 | Yes |
| Application | libpng | libpng | 1.2.32 | Yes |
| Application | libpng | libpng | 1.2.33 | Yes |
| Application | libpng | libpng | 1.2.34 | Yes |
| Application | libpng | libpng | 1.2.35 | Yes |
| Application | libpng | libpng | 1.2.36 | Yes |
| Application | libpng | libpng | 1.2.37 | Yes |
| Application | libpng | libpng | 1.2.38 | Yes |
| Application | libpng | libpng | 1.2.39 | Yes |
| Application | libpng | libpng | 1.2.40 | Yes |
| Application | libpng | libpng | 1.2.41 | Yes |
| Application | libpng | libpng | 1.2.42 | Yes |
| Application | libpng | libpng | 1.2.43 | Yes |
| Application | libpng | libpng | 1.2.43 | Yes |
| Application | libpng | libpng | 1.2.44 | Yes |
| Application | libpng | libpng | 1.2.45 | Yes |
| Application | libpng | libpng | 1.2.45 | Yes |
| Application | libpng | libpng | 1.2.46 | Yes |
| Application | libpng | libpng | 1.2.46 | Yes |
| Application | libpng | libpng | 1.2.47 | Yes |
| Application | libpng | libpng | 1.2.47 | Yes |
| Application | libpng | libpng | 1.2.48 | Yes |
| Application | libpng | libpng | 1.2.48 | Yes |
| Application | libpng | libpng | 1.2.49 | Yes |
| Application | libpng | libpng | 1.2.50 | Yes |
| Application | libpng | libpng | 1.2.51 | Yes |
| Application | libpng | libpng | 1.2.52 | Yes |
| Application | libpng | libpng | 1.2.53 | Yes |
| Application | libpng | libpng | 1.2.54 | Yes |
| Application | libpng | libpng | 1.2.55 | Yes |
| Application | libpng | libpng | 1.1.1 | Yes |
| Application | libpng | libpng | 1.0.0 | Yes |
| Application | libpng | libpng | 1.0.1 | Yes |
| Application | libpng | libpng | 1.0.2 | Yes |
| Application | libpng | libpng | 1.0.3 | Yes |
| Application | libpng | libpng | 1.0.5 | Yes |
| Application | libpng | libpng | 1.0.6 | Yes |
| Application | libpng | libpng | 1.0.7 | Yes |
| Application | libpng | libpng | 1.0.8 | Yes |
| Application | libpng | libpng | 1.0.9 | Yes |
| Application | libpng | libpng | 1.0.10 | Yes |
| Application | libpng | libpng | 1.0.11 | Yes |
| Application | libpng | libpng | 1.0.12 | Yes |
| Application | libpng | libpng | 1.0.13 | Yes |
| Application | libpng | libpng | 1.0.14 | Yes |
| Application | libpng | libpng | 1.0.15 | Yes |
| Application | libpng | libpng | 1.0.16 | Yes |
| Application | libpng | libpng | 1.0.17 | Yes |
| Application | libpng | libpng | 1.0.18 | Yes |
| Application | libpng | libpng | 1.0.19 | Yes |
| Application | libpng | libpng | 1.0.20 | Yes |
| Application | libpng | libpng | 1.0.21 | Yes |
| Application | libpng | libpng | 1.0.22 | Yes |
| Application | libpng | libpng | 1.0.23 | Yes |
| Application | libpng | libpng | 1.0.24 | Yes |
| Application | libpng | libpng | 1.0.25 | Yes |
| Application | libpng | libpng | 1.0.26 | Yes |
| Application | libpng | libpng | 1.0.27 | Yes |
| Application | libpng | libpng | 1.0.28 | Yes |
| Application | libpng | libpng | 1.0.29 | Yes |
| Application | libpng | libpng | 1.0.30 | Yes |
| Application | libpng | libpng | 1.0.31 | Yes |
| Application | libpng | libpng | 1.0.32 | Yes |
| Application | libpng | libpng | 1.0.33 | Yes |
| Application | libpng | libpng | 1.0.34 | Yes |
| Application | libpng | libpng | 1.0.35 | Yes |
| Application | libpng | libpng | 1.0.37 | Yes |
| Application | libpng | libpng | 1.0.38 | Yes |
| Application | libpng | libpng | 1.0.39 | Yes |
| Application | libpng | libpng | 1.0.40 | Yes |
| Application | libpng | libpng | 1.0.41 | Yes |
| Application | libpng | libpng | 1.0.42 | Yes |
| Application | libpng | libpng | 1.0.43 | Yes |
| Application | libpng | libpng | 1.0.44 | Yes |
| Application | libpng | libpng | 1.0.45 | Yes |
| Application | libpng | libpng | 1.0.46 | Yes |
| Application | libpng | libpng | 1.0.47 | Yes |
| Application | libpng | libpng | 1.0.48 | Yes |
| Application | libpng | libpng | 1.0.50 | Yes |
| Application | libpng | libpng | 1.0.51 | Yes |
| Application | libpng | libpng | 1.0.52 | Yes |
| Application | libpng | libpng | 1.0.53 | Yes |
| Application | libpng | libpng | 1.0.54 | Yes |
| Application | libpng | libpng | 1.0.55 | Yes |
| Application | libpng | libpng | 1.0.55 | Yes |
| Application | libpng | libpng | 1.0.56 | Yes |
| Application | libpng | libpng | 1.0.56 | Yes |
| Application | libpng | libpng | 1.0.57 | Yes |
| Application | libpng | libpng | 1.0.57 | Yes |
| Application | libpng | libpng | 1.0.58 | Yes |
| Application | libpng | libpng | 1.0.59 | Yes |
| Application | libpng | libpng | 1.0.60 | Yes |
| Application | libpng | libpng | 1.0.61 | Yes |
| Application | libpng | libpng | 1.0.62 | Yes |
| Application | libpng | libpng | 1.0.63 | Yes |
| Application | libpng | libpng | 1.0.64 | Yes |
| Application | libpng | libpng | 1.0.65 | Yes |
| Operating System | fedoraproject | fedora | 23 | Yes |
| Operating System | debian | debian_linux | 6.0 | Yes |
| Application | libpng | libpng | 1.4.0 | Yes |
| Application | libpng | libpng | 1.4.1 | Yes |
| Application | libpng | libpng | 1.4.2 | Yes |
| Application | libpng | libpng | 1.4.3 | Yes |
| Application | libpng | libpng | 1.4.4 | Yes |
| Application | libpng | libpng | 1.4.5 | Yes |
| Application | libpng | libpng | 1.4.6 | Yes |
| Application | libpng | libpng | 1.4.7 | Yes |
| Application | libpng | libpng | 1.4.8 | Yes |
| Application | libpng | libpng | 1.4.9 | Yes |
| Application | libpng | libpng | 1.4.10 | Yes |
| Application | libpng | libpng | 1.4.11 | Yes |
| Application | libpng | libpng | 1.4.12 | Yes |
| Application | libpng | libpng | 1.4.13 | Yes |
| Application | libpng | libpng | 1.4.14 | Yes |
| Application | libpng | libpng | 1.4.15 | Yes |
| Application | libpng | libpng | 1.4.16 | Yes |
| Application | libpng | libpng | 1.4.17 | Yes |
| Application | libpng | libpng | 1.4.18 | Yes |
| Application | libpng | libpng | 0.90 | Yes |
| Application | libpng | libpng | 0.95 | Yes |
| Application | libpng | libpng | 0.96 | Yes |
| Application | libpng | libpng | 0.97 | Yes |
| Application | libpng | libpng | 0.98 | Yes |
| Application | libpng | libpng | 0.99 | Yes |
| Application | libpng | libpng | 1.5.0 | Yes |
| Application | libpng | libpng | 1.5.1 | Yes |
| Application | libpng | libpng | 1.5.1 | Yes |
| Application | libpng | libpng | 1.5.2 | Yes |
| Application | libpng | libpng | 1.5.2 | Yes |
| Application | libpng | libpng | 1.5.3 | Yes |
| Application | libpng | libpng | 1.5.4 | Yes |
| Application | libpng | libpng | 1.5.4 | Yes |
| Application | libpng | libpng | 1.5.5 | Yes |
| Application | libpng | libpng | 1.5.5 | Yes |
| Application | libpng | libpng | 1.5.6 | Yes |
| Application | libpng | libpng | 1.5.6 | Yes |
| Application | libpng | libpng | 1.5.7 | Yes |
| Application | libpng | libpng | 1.5.7 | Yes |
| Application | libpng | libpng | 1.5.8 | Yes |
| Application | libpng | libpng | 1.5.8 | Yes |
| Application | libpng | libpng | 1.5.9 | Yes |
| Application | libpng | libpng | 1.5.9 | Yes |
| Application | libpng | libpng | 1.5.10 | Yes |
| Application | libpng | libpng | 1.5.11 | Yes |
| Application | libpng | libpng | 1.5.11 | Yes |
| Application | libpng | libpng | 1.5.12 | Yes |
| Application | libpng | libpng | 1.5.13 | Yes |
| Application | libpng | libpng | 1.5.13 | Yes |
| Application | libpng | libpng | 1.5.14 | Yes |
| Application | libpng | libpng | 1.5.15 | Yes |
| Application | libpng | libpng | 1.5.16 | Yes |
| Application | libpng | libpng | 1.5.17 | Yes |
| Application | libpng | libpng | 1.5.18 | Yes |
| Application | libpng | libpng | 1.5.19 | Yes |
| Application | libpng | libpng | 1.5.20 | Yes |
| Application | libpng | libpng | 1.5.21 | Yes |
| Application | libpng | libpng | 1.5.22 | Yes |
| Application | libpng | libpng | 1.5.23 | Yes |
| Application | libpng | libpng | 1.5.24 | Yes |
| Application | libpng | libpng | 1.5.25 | Yes |
| Application | libpng | libpng | 1.3.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For redhat's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.