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LMVD-ID: 86fe7f46
Paper published May 1, 2025
Entry analyzed June 12, 2025
Paper-reported evidence
Confidence: Source-linked

The LMVD-ID is an internal research identifier, not an official CVE identifier.

CoT Jailbreak Mitigation Failure

Chain-of-thought (CoT) reasoning, while intended to improve safety, can paradoxically increase the harmfulness of successful jailbreak attacks by enabling the generation of highly detailed and actionable instructions…

BibTeX citation

Paper-evaluated models(12)

Claude 3.5 Sonnet, DeepSeek Chat, DeepSeek R1 +9 more
  • Claude 3.5 Sonnet
  • DeepSeek Chat
  • DeepSeek R1
  • GLM
  • GPT-4o
  • Llama 3.1 8B Instruct
  • o1
  • o3-mini
  • Qwen 32B
  • Qwen 72B
  • Qwen 7B
  • QwQ 32B

Description

Chain-of-thought (CoT) reasoning, while intended to improve safety, can paradoxically increase the harmfulness of successful jailbreak attacks by enabling the generation of highly detailed and actionable instructions. Existing jailbreaking methods, when applied to LLMs employing CoT, can elicit more precise and dangerous outputs than those from LLMs without CoT.

Examples

See the paper "Does Chain-of-Thought Reasoning Really Reduce Harmfulness from Jailbreaking?" for specific examples of the FICDETAIL jailbreaking attack against various LLMs with and without CoT. The paper includes examples showing significantly more detailed and actionable harmful outputs from LLMs using CoT.

Impact

Successful jailbreak attacks against LLMs employing CoT reasoning can result in the generation of highly detailed, step-by-step instructions for malicious activities, increasing the likelihood of successful execution of harmful actions. The increased detail significantly amplifies the potential impact compared to attacks against LLMs lacking CoT.

Affected Systems

Large language models (LLMs) that utilize chain-of-thought (CoT) reasoning for improved response generation, including but not limited to, those listed in the referenced paper.

Mitigation Steps

  • Further research into methods for mitigating the enhanced detail generation within CoT reasoning is needed.
  • Develop and implement robust safety mechanisms that account for the increased detail provided by CoT, potentially focusing on evaluating not only the risk of a harmful response, but also its detail and potential for execution.
  • Rigorous testing and evaluation of LLMs using CoT, including adversarial testing against various jailbreaking techniques, to identify and address vulnerabilities.

Research context and confidence

Evidence and verification
Paper-reported; independent reproduction is not documented.
Primary research source linked.
Severity
Not rated by this catalog.
Source and publication type
arXiv · Research preprint.
Peer-review status is not provided by this source.
Author and publication status
Author metadata is not stored; see the primary paper.
Threat model and attacker access
Not explicitly classified; consult the primary paper..
Related deployment categories
No related deployment category is classified.
Taxonomy labels only; paper-specific deployment prerequisites are not inferred.
Affected systems
Large language models (LLMs) that utilize chain-of-thought (CoT) reasoning for improved response generation, including but not limited to, those listed in the referenced paper.

Research Paper

Does Chain-of-Thought Reasoning Really Reduce Harmfulness from Jailbreaking?

Primary source: arXiv. Findings are reported by the cited research and have not been independently verified.

View Paper

Evidence

This entry is based on a primary research source. Its findings are paper-reported; independent reproduction and verification are not claimed.

https://arxiv.org/abs/2505.17650