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CVE-2012-1820

15
FAUCET Score

CVE-2012-1820 describes a denial-of-service vulnerability in Quagga 0.99.20.1 and earlier, specifically within the bgpd component. An attacker can exploit this by sending a malformed Outbound Route Filtering (ORF) capability TLV in an OPEN message during a BGP peering relationship, causing an assertion failure and daemon exit. This vulnerability has a low severity score (CVSS 2.9) due to its adjacent network attack vector and medium attack complexity, resulting in a partial availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.99.20.1CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*
0.95CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:0.95:*:*:*:*:*:*:*
0.96CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:0.96:*:*:*:*:*:*:*
0.96.1CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:0.96.1:*:*:*:*:*:*:*
0.96.2CPE matchmatch criteria
cpe:2.3:a:quagga:quagga:0.96.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.9LOW

AV:A/AC:M/Au:N/C:N/I:N/A:P

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
ADJACENT_NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
5.5
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.06%
Probability of exploitation in next 30 days
EPSS Percentile
60.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0106 is in the 83rd percentile among its peer group of 122 CVEs.

Social Chatter

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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: quagga-0:0.99.15-7.el6_3.2
View patch

Vendor Advisories (1)

redhatCVE-2012-1820Low

(bgpd): Assertion failure by processing BGP OPEN message with malformed ORF capability TLV (VU#962587)

Jun 3, 2012

References

rhn.redhat.com / errata/RHSA-2012-1259.html
secunia.com / advisories/50941
debian.org / security/2012/dsa-2497
kb.cert.org / vuls/id/962587
US Government Resource
securityfocus.com / bid/53775
ubuntu.com / usn/USN-1605-1