Missing its original deadline of Monday (June 1, 2026), the CBSE’s re-evaluation portal went live during the early hours of Tuesday (June 2, 2026). More than 16,000 students have successfully completed their submissions as of 3 p.m., the Board said.

Sharing an update from its ‘cybersecurity teams’ on Tuesday evening (June 2, 2026), the CBSE said that while “thousands of students accessed” the portal today, “malicious actors attempted to disrupt services through a barrage of cyberattacks.”

“Most recent being a denial of service attack attempt causing 1.5 million hits on the portal within a matter of 2 minutes and more than 1 lakh attempts of unauthorised file access,” the post on X read.

Earlier in the day, CBSE said that the portal was live. In a post on X, It also shared a video of the step-by-step procedure on how to apply for verification and re-evaluation. The portal can be accessed here.

“Based on student feedback, we have further refined the platform, including extending session time limits to make the process more convenient and seamless. Our teams remain vigilant and responsive to ensure our dearest students are facilitated in all ways possible,” it added.

In the morning, several users replied to CBSE’s post on X, saying that they were unable to login and pointed to several other problems with logging in to the portal.

On Monday (June 1, 2026) afternoon, the CBSE had stated that the “verification and re-evaluation portal will go live soon” but remained inactive through the day.

The delays follow severe criticism over the board’s expanded On-Screen Marking (OSM) system used for evaluating the Class 12 examinations this year.

The application portal was originally slated to open on May 29. The CBSE later postponed the launch to June 1 to build a “transparent and glitch-free process”.

When students tried to access scanned copies of their evaluated answer sheets earlier in May, they encountered broken pages, faulty payment gateways, and blurred or incomplete digital scripts.

To salvage the system, the Ministry of Education brought in top engineering experts from IIT Kanpur and IIT Madras to audit vulnerabilities and fortify the infrastructure.

Only students who have already applied for and received their scanned digital answer books can apply for re-evaluation.

The CBSE has stated that when applying for re-evaluation the student must specify exact question numbers and explain online how an answer matches the official marking scheme but was incorrectly evaluated.

Over 4 lakh students have applied to check their answer sheets this year with a massive volume of complaints from students who received lower-than-expected scores in Physics and Mathematics.

Following intervention by Union Education Minister Dharmendra Pradhan, the CBSE has promised that all re-evaluation fees will be fully refunded if a student’s marks increase after the review.