CVE-2010-3035
Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote…
- 7.5HighCVSS base score
- 5.7%Exploitation in 30 daysEPSS · top 7.0% of all CVEs
- YesKnown exploitedin CISA's KEV since 25 Mar 2022
- YesPublic exploitsa reference or SSVC says so
Description
Cisco IOS XR 3.4.0 through 3.9.1, when BGP is enabled, does not properly handle unrecognized transitive attributes, which allows remote attackers to cause a denial of service (peering reset) via a crafted prefix announcement, as demonstrated in the wild in August 2010 with attribute type code 99, aka Bug ID CSCti62211.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability.
- Added
- 25 Mar 2022
- Fix due (US federal)
- 15 Apr 2022
- Used by ransomware
- Not known
Apply updates per vendor instructions.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 25 Mar 2022.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By cisco
- 13 days later
· 13 days later
Published
- 12 years later
· 12 years later
Added to CISA KEV
Known exploited in the wild
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 5.7% · top 7.0% of all CVEs (10 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
8
- ciscoiosxr-bgp-packet-dos(61443) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 1024371 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20100827 Cisco IOS XR Software Border Gateway Protocol Vulnerability (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
- [nanog] 20100827 Did your BGP crash today? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 41190 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ADV-2010-2227 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 67696 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-3035 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2010-3037 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2010-3035)Record last updated .