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CVE-2011-0546

32
FAUCET Score

CVE-2011-0546 describes a critical vulnerability in Symantec Backup Exec versions 11.0, 12.0, 12.5, 13.0, and 13.0 R2. This flaw allows man-in-the-middle attackers to execute NDMP commands due to insufficient validation of identity information exchanged between the media server and remote agents. With a CVSS score of 6.5, this vulnerability has a high impact on confidentiality, integrity, and availability, requiring authentication and a high attack complexity, but only local network access. While not listed in CISA's KEV catalog, an exploit (EDB-17517) is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
11.0CPE matchmatch criteria
cpe:2.3:a:symantec:backup_exec:11.0:*:*:*:*:*:*:*
12.0CPE matchmatch criteria
cpe:2.3:a:symantec:backup_exec:12.0:*:*:*:*:*:*:*
12.5CPE matchmatch criteria
cpe:2.3:a:symantec:backup_exec:12.5:*:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:a:symantec:backup_exec:13.0:*:*:*:*:*:*:*
13.0CPE matchmatch criteria
cpe:2.3:a:symantec:backup_exec:13.0:r2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.5MEDIUM

AV:A/AC:H/Au:S/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Exploitability Score
2.5
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.60%
Probability of exploitation in next 30 days
EPSS Percentile
73.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-17517 · Jul 9, 2011
This CVE's current EPSS score of 0.0160 is in the 95th percentile among its peer group of 74 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
secunia.com / advisories/44698
Vendor Advisory
securityreason.com / securityalert/8300
securityfocus.com / bid/47824
symantec.com / security_response/securityupdates/detail.jsp