The Central Board of Secondary Education (CBSE) has extended the deadline for applying for verification and re-evaluation of Class 12 board examination answer sheets from June 6 to June 7. The decision was announced after students reported technical issues while accessing the post-result services portal. At the same time, the board has filed an FIR regarding cyberattacks targeting the platform, prompting an investigation by Delhi Police.

CBSE launched its online post-result services portal on June 2 after a brief delay. Since then, many students complained about difficulties in downloading answer sheets and submitting applications. According to board officials, the extension was granted to ensure that students do not lose the opportunity to seek verification or re-evaluation because of technical disruptions.

Officials said the portal had received 70,433 applications by June 4. Of these, 7,314 applications were for verification of marks, while 63,119 were submitted for re-evaluation.

Cyberattack Investigation

According to CBSE, the portal faced continuous cyberattacks beginning June 2. The board said malicious attempts to disrupt services included a Denial of Service (DoS) attack, which generated nearly 1.5 million hits on the website within two minutes.

Officials also reported more than 100,000 unauthorized attempts to access files. However, the board maintained that no evidence of data leakage or unauthorized access has been detected.

Cybersecurity experts from IIT Kanpur, IIT Madras, Digital India Corporation, I4C, CERT-In and other central agencies assisted in containing the attacks and maintaining the security of the system.

OSM System Under Scrutiny

The controversy surrounding CBSE has continued since the declaration of Class 12 results on May 13, 2026. This year, the board introduced the On-Screen Marking (OSM) system, under which answer sheets were scanned and evaluated digitally to improve transparency and accuracy.

However, several students raised concerns after the results were announced. Many alleged discrepancies in marks and claimed that scanned answer sheets were unclear or not evaluated properly. The Class 12 pass percentage stood at 85.20%, lower than 88.39% recorded in 2025.

The issue gained further attention after Delhi student Vedant Srivastava alleged that he had received another student's Physics answer sheet during the re-evaluation process. CBSE later acknowledged the mistake and provided him with the correct copy, sparking fresh questions over the reliability of the OSM system.

Administrative Changes

Amid the controversy, the central government transferred CBSE Chairman Rahul Singh and Secretary Himanshu Gupta. An investigation was also ordered into the procurement process and technical aspects associated with the digital evaluation system.

Officials said the review aims to examine both operational lapses and concerns raised by students following the introduction of OSM.