Benchmark Almanac

CVE-Bench

GPT-5.6 Sol 94.1% leads since August 2026
Only in system cards

Real-world web-application CVEs in sandboxed services. Agent is scored on reaching predefined attack objectives.

40 critical-severity CVEs in live web applications, released 31 March 2025 with reference exploits on request. ICML 2025 spotlight. Apache 2.0. Superseded by CVE-Bench 2, whose grader changed the evaluation criteria.

Made by
UIUC (Kang Lab)
Released
March 2025
Kind
Finding and exploiting real bugs
Level
Expert
Scored
Checked automatically
Answers
Agent task
Tasks
All public
Strongest model tested
GPT-5.6 Sol #13 on the capability index
Last in a system card
September 2026
Last model added
September 2026

In the authors’ words

Large language model (LLM) agents are increasingly capable of autonomously conducting cyberattacks, posing significant threats to existing applications. This growing risk highlights the urgent need for a real-world benchmark to evaluate the ability of LLM agents to exploit web application vulnerabilities. However, existing benchmarks fall short as they are limited to abstracted Capture the Flag competitions or lack comprehensive coverage. Building a benchmark for real-world vulnerabilities involves both specialized expertise to reproduce exploits and a systematic approach to evaluating unpredictable threats. To address this challenge, we introduce CVE-Bench, a real-world cybersecurity benchmark based on critical-severity Common Vulnerabilities and Exposures. In CVE-Bench, we design a sandbox framework that enables LLM agents to exploit vulnerable web applications in scenarios that mimic real-world conditions, while also providing effective evaluation of their exploits. Our evaluation shows that the state-of-the-art agent framework can resolve up to 13% of vulnerabilities.

Abstract of CVE-Bench: A Benchmark for AI Agents' Ability to Exploit Real-World Web Application Vulnerabilities (arXiv:2503.17332, CC0)
14
Models scored in lab cards
20
System cards report it, from 3 labs

GPT-5.6 Sol leads with 94.1% among models released by September 2026

Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.

The newest model with a score here came out in September 2026, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 GPT-5.6 Sol 94.1%
  2. 2 GPT-5.5 Pro 93.1%
  3. 3 GPT-5.5 93.1%
  4. 4 GPT-5.5 Instant 90.2%
  5. 5 GPT-5.3 Codex 90%
  6. 6 GPT-5.2 Codex 87%
  7. 7 GPT-5.4 86.3%
  8. 8 GPT-5.4 Mini 83.3%
  9. 9 GPT-5.6 Luna 82.3%
  10. 10 GPT-5.1-Codex-Max 80%
  11. 11 GPT-5.2 69%
  12. 12 Grok 4.6 39.8%
  13. 13 Grok 4.7 36.6%
  14. 14 MAI-Cyber-1-Flash 31.4%

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 GPT-5.6 Sol 94.1% Aug 2026 Lab model card
2 GPT-5.5 Pro 93.1% Apr 2026 Lab model card
3 GPT-5.5 93.1% Apr 2026 Lab model card
4 GPT-5.5 Instant 90.2% May 2026 Lab model card
5 GPT-5.3 Codex 90% Feb 2026 Lab model card
6 GPT-5.2 Codex 87% Dec 2025 Lab model card
7 GPT-5.4 86.3% Mar 2026 Lab model card
8 GPT-5.4 Mini 83.3% Mar 2026 Lab model card
9 GPT-5.6 Luna 82.3% Aug 2026 Lab model card
10 GPT-5.1-Codex-Max 80% Nov 2025 Lab model card
11 GPT-5.2 69% Dec 2025 Lab model card
12 Grok 4.6 39.8% Aug 2026 Lab model card
13 Grok 4.7 36.6% Sep 2026 Lab model card
14 MAI-Cyber-1-Flash 31.4% Jul 2026 Lab model card

5 models have held number one in labs’ own numbers since its release in March 2025

Lab claims count from the day the card came out, independent runs from the model’s release.

OpenAI
Lab claims Passed 85% in Dec 2025, by GPT-5.2 Codex
GPT-5.6 Sol 94.1%

Source: Labs’ model cards

OpenAI’s own number for GPT-5.2 Codex passed 85% in December 2025

All the scores we have, one dot each, so a model tested at several settings appears more than once.

Reported by the lab in its model card Best so far
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) GPT-5.6 Sol GPT-5.5 Pro GPT-5.2 Codex GPT-5.1-Codex-Max 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) GPT-5.6 Sol GPT-5.2 Codex

Source: Labs’ model cards

Labs report it only in system cards

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.

20 system cards report it, from 3 labs

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
Sep 21, 2026 Grok 4.7 model card 36.6 CVE-Bench, reward, xhigh, Grok Build harness (6.2 table). High = 37.7% Cyber risk
Aug 12, 2026 Grok 4.6 model card 39.8 CVE-Bench, reward, high, without safeguards (7.2 table) Cyber risk
Aug 6, 2026 GPT-5.6 Sol system card addendum 94.1 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, representative checkpoint, printed chart label (Figure 8, 7.1.2.2) Cyber risk
Aug 6, 2026 GPT-5.6 Luna system card addendum 82.3 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, representative checkpoint, printed chart label (Figure 8, 7.1.2.2) Cyber risk
Jul 27, 2026 MAI-Cyber-1-Flash model card 31.4 CVEBench, model-only terminal harness, printed 0.314, version not stated (External Cyber Benchmark Results) Cyber risk
Jul 9, 2026 GPT-5.6 Terra system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
Jul 9, 2026 GPT-5.6 Sol system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
Jul 9, 2026 GPT-5.6 Luna system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
Jun 25, 2026 GPT-5.6 Terra system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
Jun 25, 2026 GPT-5.6 Sol system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
Jun 25, 2026 GPT-5.6 Luna system card CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 by output tokens, chart without printed numbers (Figure 32, 9.1.2.2) Cyber risk
May 4, 2026 GPT-5.5 Instant system card 90.2 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, printed chart label (Figure 8, 8.1.2.2) Cyber risk
Apr 23, 2026 GPT-5.5 system card 93.1 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, printed chart label (Figure 17, 9.1.2.2) Cyber risk
Apr 23, 2026 GPT-5.5 Pro system card 93.1 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, GPT-5.5 Pro, printed chart label (Figure 17, 9.1.2.2) Cyber risk
Mar 17, 2026 GPT-5.4 Mini system card 83.3 CVE-Bench, pass@1 (Table 19) Cyber risk
Mar 5, 2026 GPT-5.4 system card 86.3 CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, printed chart label (Figure 13, 5.1.2.2) Cyber risk
Feb 5, 2026 GPT-5.3 Codex system card 90 CVEBench blind 0-day, pass@1, 34 of 40 challenges (Figure 6, 5.1.2.2) Cyber risk
Dec 18, 2025 GPT-5.2 Codex system card addendum 87 CVEBench blind 0day, CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1 over 3 rollouts, printed chart label (Figure 6, 5.1.2.2) Cyber risk
Dec 11, 2025 GPT-5.2 system card addendum 69 CVEBench blind 0day, gpt-5.2 no browsing, 34 of 40 challenges, printed chart label (Figure 10) Cyber risk
Nov 18, 2025 GPT-5.1-Codex-Max system card 80 CVEBench blind 0day, CVE-Bench v1.0, 34 of 40 challenges, zero-day prompt, pass@1, printed chart label (Figure 7, 5.1.2.2) Cyber risk

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