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CVE-2021-43350

31
FAUCET Score

CVE-2021-43350 is a critical LDAP injection vulnerability affecting Apache Traffic Control Traffic Ops, allowing an unauthenticated attacker to inject unsanitized content into the LDAP filter via a specially crafted username to the POST /login endpoint. With a CVSS score of 9.8, this vulnerability presents a critical risk due to its network attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While no public exploits or active exploitation have been observed, and community discussion is minimal, the high FAUCET Risk Score of 80/100 indicates its significant potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.1.0, < 5.1.4CPE matchmatch criteria
cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.0.1CPE matchmatch criteria
cpe:2.3:a:apache:traffic_control:*:*:*:*:*:*:*:*
5.1.4CPE matchmatch criteria
cpe:2.3:a:apache:traffic_control:5.1.4:rc0:*:*:*:*:*:*
6.0.1CPE matchmatch criteria
cpe:2.3:a:apache:traffic_control:6.0.1:rc0:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.43%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0443 is in the 84th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

gopatch availablevia ghsa
Product: github.com/apache/trafficcontrolFixed in: 6.0.1
gopatch availablevia ghsa
Product: github.com/apache/trafficcontrolFixed in: 5.1.4

Vendor Advisories (1)

goGHSA-mg2c-rc36-p594critical

Apache Traffic Control Traffic Ops Vulnerable to LDAP Injection

May 24, 2022

References

trafficcontrol.apache.org / security
Vendor Advisory
openwall.com / lists/oss-security/2021/11/11/3
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2021/11/11/4
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2021/11/17/1
Mailing ListThird Party Advisory