CVE-2017-20227 | Varaneckas JAD Java Decompiler up to 1.5.8e-1kali1 out-of-bounds write (Exploit 42255 / EUVD-2017-18947)

VDB-354083 · CVE-2017-20227 · EXPLOIT 42255 VARANECKAS JAD JAVA DECOMPILER UP TO 1.5.8E-1KALI1 OUT-OF-BOUNDS WRITE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 8.2 $0-$5k 1.59+ Summaryinfo A vulnerability identified as critical has been detected in Varaneckas JAD Java Decompiler up to 1.5.8e-1kali1. This issue affects some unknown processing. The manipulation leads to out-of-bounds write. This vulnerability is listed as CVE-2017-20227. The attack may be initiated remotely. In addition, an exploit is available. Detailsinfo A vulnerability was found in Varaneckas JAD Java Decompiler up to 1.5.8e-1kali1 and classified as critical. This issue affects some unknown functionality. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is: JAD Java Decompiler 1.5.8e-1kali1 and prior contains a stack-based buffer overflow vulnerability that allows attackers to execute arbitrary code by supplying overly long input that exceeds buffer boundaries. Attackers can craft malicious input passed to the jad command to overflow the stack and execute a return-oriented programming chain that spawns a shell. It is possible to read the advisory at exploit-db.com. The identification of this vulnerability is CVE-2017-20227 since 03/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The exploit is available at exploit-db.com. It is declared as proof-of-concept. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. The vulnerability is also documented in the databases at Exploit-DB (42255) and EUVD (EUVD-2017-18947). Productinfo Type Programming Language Software Vendor Varaneckas Name JAD Java Decompiler Version 1.5.8e-1kali1 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 8.5 VulDB Meta Temp Score: 8.2 VulDB Base Score: 7.3 VulDB Temp Score: 6.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 9.8 CNA Vector (VulnCheck): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Out-of-bounds write CWE: CWE-787 / CWE-119 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 EPSS Score: 🔒 EPSS Percentile: 🔒 Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Exploit-DB: 🔒 Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/28/2026 Advisory disclosed 03/28/2026 +0 days CVE reserved 03/28/2026 +0 days VulDB entry created 03/29/2026 +0 days VulDB entry last update Sourcesinfo Advisory: 42255 Status: Not defined CVE: CVE-2017-20227 (🔒) GCVE (CVE): GCVE-0-2017-20227 GCVE (VulDB): GCVE-100-354083 EUVD: 🔒 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/28/2026 21:47 Updated: 03/29/2026 00:36 Changes: 03/28/2026 21:47 (80), 03/29/2026 00:36 (1) Complete: 🔍 Cache ID: 99:568:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸