Integer Overflow or Wraparound in Mongoose Web Server library

published 2024-11-18 23 mo ago modified 2026-09-08 2 mo ago also EUVD-2024-39588

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits: 0; none known

Integer Overflow or Wraparound vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and produce a segmentation fault on the application.

Patch / fix

fixed in 1

Siemens Reyrolle 7SR5 V2.70

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-258-05 updated 2026-09-15 cvss 7.5

Siemens Reyrolle 7SR5

Siemens Reyrolle 7SR5 < 2.70
affected: fixed in V2.70 support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 23 mo ago (2024-11-18)

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Cesanta Mongoose Web Server
cesanta mongoose
Siemens Reyrolle 7SR5

Classification

Weakness

CWE-190 Integer Overflow or Wraparound

References

Sources

CVE List CVE-2024-42384
NVD CVE-2024-42384

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary