CTF Time

Name: Iran Tech Olympics CTF 2025 (an Iran Tech Olympics CTF event.)
Date: Sept. 26, 2025, 1 p.m. — 27 Sept. 2025, 13:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.olympics.tech/
Rating weight: 25.00
Event organizers: ASIS

Name: HackornCTF 2025 Quals (an Hackorn event.)
Date: Sept. 25, 2025, midnight — 25 Sept. 2025, 23:59 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.secpen.org/
Rating weight: 0
Event organizers: Hackorn

Name: Srdnlen CTF 2025 Finals (Sardinia Cyber Camp) (an Srdnlen CTF event.)
Date: Sept. 25, 2025, 10 a.m. — 25 Sept. 2025, 22:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Italy, Cagliari
Offical URL: https://ctf.srdnlen.it/
Rating weight: 25.00
Event organizers: Srdnlen

Name: CrewCTF 2025 (an CrewCTF event.)
Date: Sept. 19, 2025, 9 p.m. — 21 Sept. 2025, 21:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.crewc.tf/
Rating weight: 38.93
Event organizers: thehackerscrew

Name: Ctrl+Space CTF Quals (an Ctrl+Space CTF event.)
Date: Sept. 20, 2025, 9 a.m. — 21 Sept. 2025, 08:59 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctrl-space.gg/
Rating weight: 25.00
Event organizers: ESA

Name: K17 CTF (an K17 CTF event.)
Date: Sept. 19, 2025, 8 a.m. — 21 Sept. 2025, 08:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.secso.cc/
Rating weight: 24.83
Event organizers: K17

Name: CDCTF 2025 (an CDCTF event.)
Date: Sept. 20, 2025, 3 p.m. — 21 Sept. 2025, 03:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://uacrimsondefense.github.io/cdctf.html
Rating weight: 25.00
Event organizers: Crimson Defense

Name: CyberKumbez 2025 (an CyberKumbez event.)
Date: Sept. 17, 2025, 10 a.m. — 19 Sept. 2025, 16:00 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Astana, Kazakhstan
Offical URL: https://kazhackstan.com/
Rating weight: 0.00
Event organizers: KazHackStan

Name: VolgaCTF 2025 Final (an VolgaCTF Final event.)
Date: Sept. 18, 2025, 6 a.m. — 18 Sept. 2025, 15:00 UTC  [add to calendar]
Format: Attack-Defense
On-site
Location: Russia. Samara
Offical URL: https://volgactf.ru/en/volgactf-2025/final/
Rating weight: 12.40
Event organizers: VolgaCTF.org

Name: CTF@AC - Quals (an CTF@AC event.)
Date: Sept. 14, 2025, 9 a.m. — 15 Sept. 2025, 09:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.ac.upt.ro/
Rating weight: 24.53
Event organizers: UPT-CTF

Name: CSAW CTF Qualification Round 2025 (an CSAW CTF Qualification Round event.)
Date: Sept. 12, 2025, 4 p.m. — 14 Sept. 2025, 16:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.csaw.io/
Rating weight: 16.47
Event organizers: NYUSEC

Name: 07CTF (an 07CTF event.)
Date: Sept. 13, 2025, 6:30 a.m. — 14 Sept. 2025, 18:30 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://ctf.0bscuri7y.xyz/
Rating weight: 23.75
Event organizers: 0bscuri7y

Name: Alfa Surfing CTF (an Alfa CTF event.)
Date: Sept. 13, 2025, 9 a.m. — 14 Sept. 2025, 15:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://alfactf.ru/
Rating weight: 21.67
Event organizers: SPbCTF

Name: DefCamp Capture the Flag (D-CTF) 2025 Quals (an Defcamp CTF Qualification event.)
Date: Sept. 12, 2025, 10 a.m. — 14 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://dctf25-quals.cyber-edu.co/
Rating weight: 50.00
Event organizers: CCSIR.org

Name: FortID CTF 2025 (an TBTL CTF event.)
Date: Sept. 12, 2025, noon — 14 Sept. 2025, 12:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://fortid.ctfd.io/
Rating weight: 30.00
Event organizers: TBTL

Name: MaltaCTF 2025 Finals (an MaltaCTF event.)
Date: Sept. 13, 2025, 10 a.m. — 14 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-site
Location: Valletta, Malta
Offical URL: https://2025.ctf.mt/
Rating weight: 0.00
Event organizers: if this doesn't work we'll get more for next year

Name: WatCTF F25 (an WATCTF event.)
Date: Sept. 9, 2025, 7 p.m. — 11 Sept. 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://watctf.org/
Rating weight: 23.04
Event organizers: WATCTF

Name: BlackHat MEA CTF Qualification 2025 (an Blackhat MEA CTF event.)
Date: Sept. 7, 2025, 10 a.m. — 08 Sept. 2025, 10:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://blackhatmea.com/capture-the-flag
Rating weight: 25.83
Event organizers: SAFCSP

Name: ImaginaryCTF 2025 (an ImaginaryCTF event.)
Date: Sept. 5, 2025, 7 p.m. — 07 Sept. 2025, 19:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://2025.imaginaryctf.org/
Rating weight: 66.02
Event organizers: [sqrt (-1) + 1]

Name: CRACCON 2025 (an CRAC CTFs event.)
Date: Sept. 6, 2025, 8 a.m. — 07 Sept. 2025, 08:00 UTC  [add to calendar]
Format: Jeopardy
On-line
Offical URL: https://defhawk.com/battleground/raid/craccon-ctf-2025
Rating weight: 23.67
Event organizers: h4wk