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CVE-2016-1276

17
FAUCET Score

CVE-2016-1276 describes a denial-of-service vulnerability affecting Juniper Junos OS on High-End SRX-Series chassis systems with Application Layer Gateways (ALGs) enabled. Remote attackers can exploit this by sending specific in-transit traffic that matches ALG rules, leading to high CPU consumption, fabric link failures, or flip-flop failovers. Rated Medium severity with a CVSS score of 5.9, the attack requires no user interaction and can be executed remotely, though with high attack complexity. The primary impact is a denial of service, compromising system availability. Currently, there is no evidence of active exploitation, nor are there public exploits available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage are minimal, suggesting limited public attention to this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
12.1x46CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x46:-:*:*:*:*:*:*
12.1x46CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x46:d10:*:*:*:*:*:*
12.1x46CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x46:d15:*:*:*:*:*:*
12.1x46CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x46:d20:*:*:*:*:*:*
12.1x46CPE matchmatch criteria
cpe:2.3:o:juniper:junos:12.1x46:d25:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.11%
Probability of exploitation in next 30 days
EPSS Percentile
79.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0211 is in the 67th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

juniperworkaround availablevia nvd_reference
View patch

References

kb.juniper.net / InfoCenter/index
MitigationVendor Advisory
securityfocus.com / bid/91764
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036305
Third Party AdvisoryVDB Entry