CTF Time

Name: ZeroDay CTF 2025 (an Z3R0D4Y CTF event.)
Date: Oct. 30, 2025, 1 p.m. — 31 Oct. 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://register.zerologon.co.in/
Rating weight: 0
Event organizers: Z3r0_l0g0n

Name: Cryovault Quals (an ISFCR PESU CTF event.)
Date: Nov. 1, 2025, 6:30 a.m. — 02 Nov. 2025, 06:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: India, Bengaluru, PES University RR campus
Offical URL: https://www.isfcr.pes.edu/
Rating weight: 0.00
Event organizers: x6e.x65.x78.x75.x73

Name: Russian CTF Cup 2025 Qualifier (an Russian CTF Cup event.)
Date: Nov. 2, 2025, 9 a.m. — 03 Nov. 2025, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Location: Russia
Offical URL: https://ctfcup.ru/
Rating weight: 35.29
Event organizers: ctfcup

Name: CSCTF 2025 (an CSCTF event.)
Date: Nov. 7, 2025, noon — 09 Nov. 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.chronos-security.ro/
Rating weight: 0.00
Event organizers: Mirachron

Name: Cryovault Finals (an ISFCR PESU CTF event.)
Date: Nov. 9, 2025, 8 a.m. — 09 Nov. 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: India, Bengaluru, PES University RR campus
Offical URL: https://www.isfcr.pes.edu/
Rating weight: 0.00
Event organizers: x6e.x65.x78.x75.x73

Name: RootCipher (an ThunderCipher CTF event.)
Date: Nov. 9, 2025, 1 p.m. — 09 Nov. 2025, 18:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://forms.thundercipher.tech/form/949b7b32-ff49-400e-9194-a91a5deeb910
Rating weight: 0.00
Event organizers: ThunderCipher

Name: Ctrl+Space CTF Finals (an Ctrl+Space CTF event.)
Date: Nov. 4, 2025, 9 a.m. — 06 Nov. 2025, 11:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: ESTEC, Netherlands
Offical URL: https://ctrl-space.gg/
Rating weight: 25.00
Event organizers: ESA

Name: Infobahn CTF 2025 (an Infobahn CTF event.)
Date: Nov. 7, 2025, 5 p.m. — 09 Nov. 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.infobahnc.tf/
Rating weight: 25.00
Event organizers: Infobahn

Name: BuckeyeCTF 2025 (an BuckeyeCTF event.)
Date: Nov. 8, 2025, 1 a.m. — 10 Nov. 2025, 01:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.osucyber.club/
Rating weight: 50.00
Event organizers: Buckeye Bureau of BOF

Name: M*CTF 2025 Junior Quals (an M*CTF event.)
Date: Nov. 9, 2025, 9 a.m. — 09 Nov. 2025, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://mctf.mtuci.ru/
Rating weight: 36.00
Event organizers: BinaryBears

Name: CTF@AC - Finals (an CTF@AC event.)
Date: Nov. 7, 2025, 3 p.m. — 09 Nov. 2025, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Polytechnic University of Timisoara
Offical URL: https://ctf.ac.upt.ro/
Rating weight: 25.00
Event organizers: UPT-CTF

Name: saarCTF 2025 (an saarCTF event.)
Date: Nov. 8, 2025, 1 p.m. — 08 Nov. 2025, 22:00 UTC  [add to calendar]
Format: Attack-Defense
On-line
Offical URL: https://ctf.saarland/
Rating weight: 97.22
Event organizers: saarsec

Name: Equinor CTF 2025 (an Equinor CTF event.)
Date: Nov. 8, 2025, 9 a.m. — 08 Nov. 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Norway, Oslo
Offical URL: https://ctf.equinor.com/
Rating weight: 37.00
Event organizers: EPT

Name: CSAW CTF Final Round 2025 (an CSAW CTF Final Round event.)
Date: Nov. 6, 2025, 5 p.m. — 08 Nov. 2025, 05:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: United States, New York, New York
Offical URL: https://ctf.csaw.io/
Rating weight: 25.00
Event organizers: NYUSEC

Name: V1t CTF 2025 (an V1t CTF event.)
Date: Oct. 31, 2025, 1 p.m. — 02 Nov. 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.v1t.site/
Rating weight: 22.05
Event organizers: R4wr

Name: N1CTF 2025 (an N1CTF event.)
Date: Nov. 1, 2025, noon — 02 Nov. 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf2025.nu1l.com/
Rating weight: 94.50
Event organizers: Nu1L

Name: Hackloween 2025 (an SECPlayground CTF event.)
Date: Nov. 1, 2025, 2 a.m. — 02 Nov. 2025, 02:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://lobby-ctf.secplayground.com/lobby/a3666ef9-617e-4db3-8bbe-413138e25e76
Rating weight: 0.00
Event organizers: SECPlayground

Name: Haunted Pumpkin CTF '25 (an Haunted Pumpkin CTF (OSINT) event.)
Date: Oct. 31, 2025, 5 p.m. — 01 Nov. 2025, 22:59 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://osintswitzerland.ch/events/haunted-pumpkin-ctf
Rating weight: 0.00
Event organizers: OSINT Switzerland

Name: PH03N1X V1P3R N0V4 CTF (an PH03N1X V1P3R N0V4 CTF event.)
Date: Oct. 29, 2025, 10 a.m. — 31 Oct. 2025, 17:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Timisoara, România
Offical URL: http://pwnctf.ro/
Rating weight: 0.00
Event organizers: PH03N1X V1P3R N0V4 CTF

Name: Iran Tech Olympics Hardware Security 2025 (an Iran Tech Olympics CTF event.)
Date: Oct. 29, 2025, 6:30 a.m. — 29 Oct. 2025, 18:30 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Tehran, Iran
Offical URL: https://ctf.olympics.tech/
Rating weight: 25.00
Event organizers: ASIS