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Vulnerability details: VCID-qnup-dwb8-jfgd
Vulnerability ID VCID-qnup-dwb8-jfgd
Aliases CVE-2013-2028
Summary Stack-based buffer overflow with specially crafted request
Status Published
Exploitability 2.0
Weighted Severity 3.8
Risk 7.6
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
epss 0.92269 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92269 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92269 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92312 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92312 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92312 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92597 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92597 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
epss 0.92597 https://api.first.org/data/v1/epss?cve=CVE-2013-2028
cvssv2 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2013-2028
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://mailman.nginx.org/pipermail/nginx-announce/2013/000112.html
https://nginx.org/download/patch.2013.chunked.txt
https://nginx.org/download/patch.2013.chunked.txt.asc
CVE-2013-2028 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux_x86-64/remote/32277.txt
CVE-2013-2028 https://nvd.nist.gov/vuln/detail/CVE-2013-2028
CVE-2013-2028;OSVDB-93037 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/dos/25499.py
CVE-2013-2028;OSVDB-93037 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux/remote/25775.rb
CVE-2013-2028;OSVDB-93037 Exploit https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/linux_x86/remote/26737.pl
Data source Exploit-DB
Date added March 20, 2014
Description Nginx 1.4.0 (Generic Linux x64) - Remote Overflow
Ransomware campaign use Unknown
Source publication date March 15, 2014
Exploit type remote
Platform linux_x86-64
Source update date Nov. 22, 2017
Data source Metasploit
Description This module exploits a stack buffer overflow in versions 1.3.9 to 1.4.0 of nginx. The exploit first triggers an integer overflow in the ngx_http_parse_chunked() by supplying an overly long hex value as chunked block size. This value is later used when determining the number of bytes to read into a stack buffer, thus the overflow becomes possible.
Note 
Reliability:
  - unknown-reliability
Stability:
  - unknown-stability
SideEffects:
  - unknown-side-effects
Ransomware campaign use Unknown
Source publication date May 7, 2013
Platform Unix
Source URL https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/linux/http/nginx_chunked_size.rb
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Exploit Prediction Scoring System (EPSS)
Percentile 0.9971
EPSS Score 0.92269
Published At Aug. 6, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:03:12.188323+00:00 Nginx Importer Import https://nginx.org/en/security_advisories.html 37.0.0