CBSE Revaluation Portal Faces Cyber Challenges Amid High Demand

The CBSE has announced that students can apply for re-verification of their answer scripts until June 6, with over 56,000 applications already submitted. However, the revaluation portal is facing significant cyber threats, including a recent DoS attack that the board has successfully mitigated. Students have raised concerns about discrepancies between uploaded answer sheets and their originals, prompting CBSE to form a committee for investigation. This article explores the ongoing challenges and the implications for students seeking re-evaluation.

By Ambika Singh Jun 4, 2026, 14:03 IST

Revaluation Application Deadline Approaches

The Central Board of Secondary Education (CBSE) has announced that students can submit applications for the re-verification of their answer sheets until June 6. As of 9:30 PM on June 3, over 56,000 students had already taken advantage of this opportunity.

Cybersecurity Issues Affecting the Portal

CBSE has reported ongoing cyberattacks targeting its revaluation portal. Despite these challenges, the board is successfully maintaining the functionality of the portal. By the latest update, more than 56,000 applications for re-verification have been received. The application window will close at midnight on June 6. Students can access the revaluation application through the official CBSE website.

CBSE has indicated that it has successfully mitigated 3.8 million Denial of Service (DoS) attacks aimed at its website.

Official Communication from CBSE

On Wednesday, CBSE shared an update on 'X' (formerly Twitter), stating: "As of 9:30 PM tonight, the portal has accepted over 56,000 applications for verification and revaluation. Earlier this afternoon, a Denial of Service (DoS) attack involving 3.8 million packets targeting the website was successfully thwarted. Our technical teams are continuously monitoring performance and implementing improvements to ensure a smoother, faster, and uninterrupted experience for students."

Understanding Packet Denial of Service (DoS) Attacks

A Packet Denial of Service (DoS) attack occurs when hackers inundate a web portal with an excessive number of network packets. This tactic depletes the server's resources, hindering legitimate users from accessing the site. Attackers may target various network layers by sending malformed packets, creating fake traffic, or overwhelming the system with constant connection requests, aiming to crash the server or overload its bandwidth.

Concerns Raised by Students

Several Class 12 students have raised concerns that the answer sheets uploaded by the Board do not match their original submissions. They fear that this discrepancy may lead to incorrect grading. Students have noted that the handwriting on the uploaded scripts does not correspond to their own. In response, CBSE has formed a committee to investigate these claims, led by Aish Radha Chauhan. The committee may enlist help from officials from other departments if necessary and is expected to deliver its findings within a month.