SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2011-2900

Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shttpd_put_dir function in io_dir.c in Simple HTTPD (shttpd) 1.42 allows…

EXPLOIT ×2HIGH 7.5EPSS 13.3%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 13.3%, higher than 96% of all known CVEs. Patch or mitigate before the next change window.

Description

Stack-based buffer overflow in the (1) put_dir function in mongoose.c in Mongoose 3.0, (2) put_dir function in yasslEWS.c in yaSSL Embedded Web Server (yasslEWS) 0.2, and (3) _shttpd_put_dir function in io_dir.c in Simple HTTPD (shttpd) 1.42 allows remote attackers to execute arbitrary code via an HTTP PUT request, as exploited in the wild in 2011.

CVSS 2.0
7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS
13.26% probability · 96th percentile
Public exploits
2 in Exploit-DB · first 12 August 2011
CISA KEV
Not listed
Weakness
CWE-119
Affected
shttpd/shttpd · valenok/mongoose · yassl/yasslews
Source
secalert@redhat.com
EPSS trend
0%8%15%26 October 2026: 13.26%26 October 202626 October 2026

EPSS 13.3% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-17669source ↗Simple HTTPd 1.42 - 'PUT' Remote Buffer Overflowwindows · nionremote15 August 2011no
EDB-17658source ↗Simple HTTPd 1.42 - Denial of Servivewindows · G13dos12 August 2011no

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.