CVE-2015-5621

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

40.00% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 98.5% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2015-08-19 15:00Z11 YR AGO

Last updated

2025-12-04 17:20Z9 MO AGO

Reserved

2015-07-22

Assigning CNA

mitre

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

• CWE-190Integer Overflow or WraparoundBase
• CWE-19
• CWE-909Missing Initialization of ResourceClass

Data version

5.2

Document digest

9a87ee4fdaed72d9d330447e047800d373fd2440a8049c9633f454ddd7fd23f1

• lists.opensuse.orgopenSUSE-SU-2015:1502http://lists.opensuse.org/opensuse-updates/2015-09/msg00004.htmlvendor-advisoryx_refsource_SUSE
• www.exploit-db.com45547https://www.exploit-db.com/exploits/45547/exploitx_refsource_EXPLOIT-DB
• sourceforge.nethttp://sourceforge.net/p/net-snmp/code/ci/f23bcd3ac6ddee5d0a48f9703007ccc738914791/x_refsource_CONFIRM
• rhn.redhat.comRHSA-2015:1636http://rhn.redhat.com/errata/RHSA-2015-1636.htmlvendor-advisoryx_refsource_REDHAT
• www.securitytracker.com1033304http://www.securitytracker.com/id/1033304vdb-entryx_refsource_SECTRACK
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1212408x_refsource_CONFIRM
• www.ubuntu.comUSN-2711-1http://www.ubuntu.com/usn/USN-2711-1vendor-advisoryx_refsource_UBUNTU
• www.openwall.com[oss-security] 20150416 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerabilityhttp://www.openwall.com/lists/oss-security/2015/04/16/15mailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20150413 net-snmp snmp_pdu_parse() function incompletely initializaition vulnerabilityhttp://www.openwall.com/lists/oss-security/2015/04/13/1mailing-listx_refsource_MLIST
• support.citrix.comhttp://support.citrix.com/article/CTX209443x_refsource_CONFIRM
• www.debian.orgDSA-4154https://www.debian.org/security/2018/dsa-4154vendor-advisoryx_refsource_DEBIAN
• www.openwall.com[oss-security] 20150731 Re: net-snmp snmp_pdu_parse() function incompletely initializaition vulnerabilityhttp://www.openwall.com/lists/oss-security/2015/07/31/1mailing-listx_refsource_MLIST
• sourceforge.nethttps://sourceforge.net/p/net-snmp/bugs/2615/x_refsource_CONFIRM
• www.securityfocus.com76380http://www.securityfocus.com/bid/76380vdb-entryx_refsource_BID
• cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdfx_refsource_CONFIRM