CVE-2024-2758Network attack vector

Host crash via unbounded CONTINUATION frames

Published Apr 3, 2024 · Updated Feb 13, 2025

Denial of service in Tempesta FW before 0.7.1 allows remote attackers to crash the host via an HTTP/2 CONTINUATION-frame flood. Its HTTP/2 processing accepts empty CONTINUATION frames until END_HEADERS while default rate limits do not constrain the sequence, exhausting host memory. An attacker must reach an HTTP/2 listener; successful exploitation triggers an out-of-memory crash, with no reported data exposure or modification.

CVSS severity6.3
Medium
EPSS probability72.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Tempesta FW before 0.7.1 allows remote attackers to crash the host via an HTTP/2 CONTINUATION-frame flood. Its HTTP/2 processing accepts empty CONTINUATION frames until END_HEADERS while default rate limits do not constrain the sequence, exhausting host memory. An attacker must reach an HTTP/2 listener; successful exploitation triggers an out-of-memory crash, with no reported data exposure or modification.

The record

CVE
CVE-2024-2758
Published
Apr 3, 2024
Updated
Feb 13, 2025
Vendor
Tempesta Technologies
Product
Tempesta FW
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 3, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.7.0 <=0.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Tempesta Technologies · Tempesta FWversion=0.7.0 <=0.7.0

Published CVSS scores

6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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